Cup outcome
Cup Outcome
Wheel face
Acidity
The perceived brightness or liveliness of the cup.
AeroPress Wheel Glossary
AeroPress Wheel Glossary
Every control, process state, effect, and cup outcome in one text-first index
Browse every AeroPress Wheel variable, process state, and cup outcome in one searchable, text-first glossary.
Crawlable index
207 entries
Use this glossary when you already know the term you want to define. Each entry links to a dedicated variable page with the full definition, why-it-matters context, recipe language, and related wheel concepts.
A
Direct observation
Water Chemistry
Wheel face
Acidity modulation
How the water changes perceived acidity.
Measured metric
Recipe & Mass Balance
Wheel face
Actual pre-dilution yield
The liquid mass collected before post-brew dilution.
Input lever
Finish & Service
Detail panel
Aeration
Introducing air or surface exposure deliberately.
Cup outcome
Cup Outcome
Wheel face
Aftertaste
The lingering flavor and tactile impression after swallowing.
Input lever
Delivery & Mixing
Wheel face
Agitation tool
The tool used to stir or otherwise agitate the slurry.
Input lever
Brewer & Filter Setup
Detail panel
Air expulsion
Deliberately pushing out excess air before pressing.
Input lever
Brewer & Filter Setup
Wheel face
Air gap
The volume of trapped air in the brewer.
Process state
Brewer & Filter Setup
Detail panel
Air retention
Air trapped in the brewer after setup.
Direct observation
Flow, Pressure & Separation
Detail panel
Air-through-bed exposure
Air being pushed through the coffee bed near the end of the press.
Input lever
Water Chemistry
Wheel face
Alkalinity
The water’s buffering capacity, often driven by bicarbonate.
Input lever
Thermal Profile
Advanced detail
Ambient temperature
The temperature of the brewing environment.
Cup outcome
Cup Outcome
Wheel face
Aroma
The smell of the brewed coffee.
Direct observation
Coffee Material
Wheel face
Aroma condition
The current aromatic condition of the coffee material.
Direct observation
Finish & Service
Wheel face
Aroma release
How aroma is released from the final beverage.
Risk flag
Flow, Pressure & Separation
Wheel face
Astringency risk
The risk of a drying, harsh tactile finish.
B
Cup outcome
Cup Outcome
Detail panel
Balance
How well the cup’s major sensory dimensions work together.
Process state
Coffee Material
Advanced detail
Bean fragility
How easily the beans fracture during grinding.
Input lever
Coffee Material
Advanced detail
Bean temperature before grinding
The temperature of the beans when they enter the grinder.
Process state
Flow, Pressure & Separation
Wheel face
Bed compression
Compression of the coffee bed during pressing.
Process state
Delivery & Mixing
Detail panel
Bed detachment
Whether grounds release from the chamber wall or top before pressing.
Process state
Delivery & Mixing
Wheel face
Bed flatness
How even the coffee bed is before pressing.
Process state
Grind & Particles
Wheel face
Bed permeability
How easily liquid can move through the grounds.
Input lever
Brewer & Filter Setup
Detail panel
Bed preparation
The deliberate arrangement of the grounds before water addition.
Input lever
Delivery & Mixing
Advanced detail
Bed-release swirl
A swirl specifically meant to detach the bed before pressing.
Measured metric
Cup Outcome
Wheel face
Beverage TDS
Measured total dissolved solids in the served beverage.
Measured metric
Cup Outcome
Wheel face
Beverage Yield
The liquid beverage mass collected or served.
Input lever
Water Chemistry
Advanced detail
Bicarbonate
The main alkalinity contributor in many brew-water recipes.
Process state
Time & Sequencing
Detail panel
Bloom gas release
Gas release during early wetting.
Input lever
Time & Sequencing
Wheel face
Bloom time
The time between initial wetting and the next major action.
Input lever
Recipe & Mass Balance
Detail panel
Bloom water
The initial water used for wetting and gas release.
Input lever
Finish & Service
Advanced detail
Blowing / cooling protocol
A specific named cooling routine used before service.
Process state
Grind & Particles
Detail panel
Boulder share
The proportion of very large particles.
Calculated metric
Recipe & Mass Balance
Detail panel
Brew loss
The difference between brew water in and beverage out before dilution.
Input lever
Recipe & Mass Balance
Wheel face
Brew water mass
The total water mass that contacts the coffee during extraction.
Input lever
Thermal Profile
Wheel face
Brew water temperature
The temperature of water when it contacts the coffee.
Input lever
Thermal Profile
Wheel face
Brewer preheat
Heating the AeroPress before brewing.
Input lever
Flow, Pressure & Separation
Advanced detail
Brewer tilt control
Keeping the brewer aligned during the press.
Process state
Water Chemistry
Wheel face
Buffer capacity
How strongly the water resists pH change.
Input lever
Grind & Particles
Advanced detail
Burr alignment
How evenly the burrs are aligned.
Input lever
Grind & Particles
Wheel face
Burr set
The burr geometry installed in the grinder.
Direct observation
Brewer & Filter Setup
Wheel face
Bypass leakage
Liquid escaping around the intended filter path.
Input lever
Finish & Service
Wheel face
Bypass temperature
The temperature of the dilution water.
Input lever
Finish & Service
Detail panel
Bypass timing
When bypass water is added.
Input lever
Finish & Service
Wheel face
Bypass water mass
The amount of water added after extraction.
C
Input lever
Water Chemistry
Advanced detail
Calcium
A hardness ion commonly present in brewing water.
Input lever
Brewer & Filter Setup
Wheel face
Cap type
The cap used on the AeroPress.
Input lever
Time & Sequencing
Detail panel
Cap-on timing
When the filter cap is attached.
Direct observation
Coffee Material
Wheel face
Chaff load
How much chaff is present with the beans or grounds.
Input lever
Grind & Particles
Wheel face
Chaff removal
Removing chaff from beans or grounds.
Input lever
Brewer & Filter Setup
Detail panel
Chamber fill level
How full the chamber is during brewing.
Input lever
Water Chemistry
Detail panel
Chlorine / chloramine removal
Filtration or treatment that removes disinfectants from water.
Direct observation
Flow, Pressure & Separation
Wheel face
Clogging
Flow restriction caused by fines, filter loading, or bed compression.
Risk flag
Brewer & Filter Setup
Detail panel
Clogging risk
The likelihood the filter or bed blocks flow.
Input lever
Recipe & Mass Balance
Wheel face
Coffee dose
The mass of coffee used in the recipe.
Direct observation
Recipe & Mass Balance
Detail panel
Concentrate strength
How intense the undiluted brew is before bypass.
Measured metric
Recipe & Mass Balance
Wheel face
Concentrate TDS
The TDS of the undiluted brew.
Process state
Time & Sequencing
Wheel face
Contact time
The total time water and coffee are in contact.
Input lever
Time & Sequencing
Detail panel
Cooling / rest time
The time intentionally allowed for the beverage to cool before service.
Process state
Thermal Profile
Detail panel
Cooling curve
How quickly the beverage cools after brewing.
Input lever
Finish & Service
Wheel face
Cooling method
The active method used to lower beverage temperature.
Process state
Finish & Service
Detail panel
Cooling rate
How quickly the beverage cools during finish and service.
Direct observation
Brewer & Filter Setup
Detail panel
Cup clarity
How clean and separated the final cup feels.
Input lever
Finish & Service
Detail panel
Cup shape
The bowl and rim geometry of the serving cup.
D
Input lever
Finish & Service
Detail panel
Decanting
Pouring the beverage into another vessel.
Risk flag
Coffee Material
Detail panel
Defect risk
The likelihood that the coffee carries roast, green, storage, or process defects.
Process state
Coffee Material
Wheel face
Degassing
CO2 release from roasted coffee.
Judging metric
Finish & Service
Detail panel
Descriptor accuracy
How closely the served beverage matches the intended sensory description.
Judging metric
Cup Outcome
Detail panel
Descriptor accuracy
How closely the served coffee matches the brewer’s stated sensory description.
Input lever
Finish & Service
Wheel face
Dilution method
How bypass water is introduced and mixed.
Input lever
Recipe & Mass Balance
Detail panel
Dose into brewer
The actual ground coffee mass placed in the AeroPress.
Input lever
Recipe & Mass Balance
Detail panel
Dose into grinder
The mass of whole-bean coffee placed into the grinder.
Risk flag
Delivery & Mixing
Detail panel
Dry-pocket risk
The risk that some grounds remain insufficiently wetted.
E
Direct observation
Brewer & Filter Setup
Wheel face
Early drip-through
Liquid that passes through before intended pressing.
Input lever
Delivery & Mixing
Wheel face
Exact stir count
The exact number of stir motions.
Process state
Water Chemistry
Detail panel
Extraction efficiency
How effectively the water extracts soluble material.
Process state
Time & Sequencing
Advanced detail
Extraction progression
How extraction advances across the brew timeline.
Process state
Thermal Profile
Wheel face
Extraction rate
How quickly the coffee extracts under the thermal conditions.
Calculated metric
Recipe & Mass Balance
Wheel face
Extraction Yield
The percentage of coffee mass extracted into the beverage.
Calculated metric
Cup Outcome
Wheel face
Extraction Yield
Calculated percentage of coffee mass extracted.
F
Process state
Brewer & Filter Setup
Detail panel
Filter adhesion
How well the filter sticks and sits in the cap.
Input lever
Brewer & Filter Setup
Detail panel
Filter count
The number of filters in the stack.
Process state
Brewer & Filter Setup
Wheel face
Filter loading
How heavily fines and oils load the filter stack during the brew.
Input lever
Brewer & Filter Setup
Wheel face
Filter medium / grade
The filtration medium used in the cap.
Process state
Brewer & Filter Setup
Wheel face
Filter resistance
The resistance created by the filter stack.
Input lever
Brewer & Filter Setup
Detail panel
Filter rinse
Whether and how the filter is rinsed before brewing.
Input lever
Thermal Profile
Wheel face
Filter rinse temperature
The temperature of the rinse water used on the filter.
Input lever
Brewer & Filter Setup
Wheel face
Filter seating
How evenly and securely the filter sits in the cap.
Input lever
Finish & Service
Wheel face
Final beverage mass
The intended final drink mass after dilution.
Direct observation
Finish & Service
Detail panel
Final beverage strength
The perceived and measured strength after dilution.
Measured metric
Finish & Service
Wheel face
Final beverage TDS
The TDS of the served beverage after dilution.
Measured metric
Finish & Service
Wheel face
Final beverage temperature
The temperature of the served coffee.
Calculated metric
Finish & Service
Detail panel
Final ratio
Coffee dose relative to final beverage mass.
Measured metric
Thermal Profile
Detail panel
Final serving temperature
The temperature when the beverage is served or consumed.
Input lever
Flow, Pressure & Separation
Wheel face
Final squeeze
Pressing through the last liquid at the end of the brew.
Process state
Delivery & Mixing
Wheel face
Fines migration
Movement of fines through the slurry toward the filter.
Input lever
Grind & Particles
Detail panel
Fines removal
Removing very small particles from the grounds.
Process state
Grind & Particles
Wheel face
Fines share
The proportion of very small particles.
Cup outcome
Cup Outcome
Wheel face
Flavor
The integrated taste impression of the final cup.
Direct observation
Water Chemistry
Detail panel
Flavor clarity
How distinctly the coffee’s flavors are separated.
Input lever
Time & Sequencing
Wheel face
Flip timing
When an inverted brewer is flipped.
Input lever
Flow, Pressure & Separation
Detail panel
Flow cut-off
Deliberately stopping liquid flow.
Measured metric
Flow, Pressure & Separation
Wheel face
Flow rate
The rate at which liquid exits the brewer.
G
Input lever
Grind & Particles
Wheel face
Grind setting
The selected grind size setting.
Input lever
Grind & Particles
Wheel face
Grind speed / RPM
The speed at which the grinder is operated.
Input lever
Time & Sequencing
Advanced detail
Grind-by time
The target time by which grinding should be complete.
Input lever
Grind & Particles
Wheel face
Grinder model
The grinder used to prepare the coffee.
Measured metric
Grind & Particles
Wheel face
Grinder retention / loss
Coffee retained in the grinder or lost during transfer.
Process state
Grind & Particles
Advanced detail
Ground temp rise
The temperature increase caused by grinding.
H
Input lever
Water Chemistry
Wheel face
Hardness
The calcium and magnesium load that drives brewing hardness.
Process state
Thermal Profile
Wheel face
Heat loss
Thermal energy lost to the brewer and environment.
Input lever
Flow, Pressure & Separation
Wheel face
Hiss decision
Whether to stop before hiss, at hiss, or after hiss.
Process state
Finish & Service
Detail panel
Homogenization
How evenly the final beverage is mixed.
I
Input lever
Recipe & Mass Balance
Wheel face
In-brewer ratio
Coffee dose relative to brew water inside the brewer.
K
Input lever
Thermal Profile
Wheel face
Kettle temperature
The temperature set on the kettle.
L
Direct observation
Flow, Pressure & Separation
Detail panel
Last-liquid extraction
The extraction contribution of the final liquid pushed through the bed.
M
Input lever
Water Chemistry
Advanced detail
Magnesium
A hardness ion commonly used in custom brew-water recipes.
Input lever
Recipe & Mass Balance
Detail panel
Main pour water
The primary water addition after initial wetting.
Measured metric
Recipe & Mass Balance
Detail panel
Mass consistency
How repeatably the same masses are achieved across brews.
Process state
Grind & Particles
Advanced detail
Median particle size
The middle of the particle size distribution.
Process state
Water Chemistry
Advanced detail
Mineral balance
The relationship between hardness, alkalinity, and specific ions.
Cup outcome
Cup Outcome
Wheel face
Mouthfeel
The body, texture, and tactile quality of the beverage.
Direct observation
Finish & Service
Detail panel
Mouthfeel perception
The tactile impression of the final beverage.
O
Process state
Brewer & Filter Setup
Detail panel
Oil retention
How much coffee oil the filter setup retains.
Input lever
Coffee Material
Wheel face
Origin
The geographic and agricultural source of the coffee.
Input lever
Flow, Pressure & Separation
Wheel face
Output flow rate target
The desired liquid output speed during pressing.
Risk flag
Delivery & Mixing
Detail panel
Over-agitation risk
The risk that too much movement harms the cup.
Cup outcome
Cup Outcome
Wheel face
Overall
The total impression of the cup.
P
Process state
Thermal Profile
Wheel face
Peak slurry temperature
The maximum temperature reached in the slurry.
Process state
Flow, Pressure & Separation
Advanced detail
Permeability change
How the bed’s flow openness changes during pressing.
Input lever
Water Chemistry
Detail panel
pH
The acidity or basicity of the water.
Process state
Time & Sequencing
Wheel face
Phase timing
How the total brew time is distributed across phases.
Input lever
Brewer & Filter Setup
Detail panel
Plunger insertion depth
How far the plunger is inserted before brewing.
Input lever
Flow, Pressure & Separation
Wheel face
Plunger speed
How quickly the plunger moves downward.
Input lever
Delivery & Mixing
Detail panel
Pour intensity
How forceful the pour is.
Input lever
Delivery & Mixing
Wheel face
Pour pattern
The spatial path of the pour.
Input lever
Delivery & Mixing
Wheel face
Pour rate
The speed at which water is poured.
Input lever
Delivery & Mixing
Detail panel
Pour stages
The number and structure of pours.
Input lever
Thermal Profile
Advanced detail
Pour temperature
The actual temperature of the water as it is poured.
Input lever
Time & Sequencing
Wheel face
Pour timing
When staged pours start and end.
Input lever
Time & Sequencing
Detail panel
Press duration
How long the pressing phase takes.
Input lever
Flow, Pressure & Separation
Wheel face
Press duration
How long the active press phase takes.
Input lever
Flow, Pressure & Separation
Detail panel
Press force
The physical force applied to the plunger.
Input lever
Time & Sequencing
Wheel face
Press start time
When pressing begins.
Input lever
Brewer & Filter Setup
Wheel face
Press support / stand
A stabilizing tool used during pressing.
Process state
Flow, Pressure & Separation
Advanced detail
Pressure profile
How pressure changes over the course of the press.
Input lever
Flow, Pressure & Separation
Advanced detail
Pressure ramp
How pressure builds during the press.
Input lever
Coffee Material
Wheel face
Process
How the coffee was processed after harvest.
Process state
Grind & Particles
Wheel face
PSD width
How wide the particle size distribution is.
R
Input lever
Grind & Particles
Advanced detail
Reintroduced fines
Adding a removed fines fraction back into the brew deliberately.
Direct observation
Delivery & Mixing
Detail panel
Repeatable slurry state
How consistently the same slurry condition is reproduced before pressing.
Direct observation
Flow, Pressure & Separation
Wheel face
Residual slurry
Liquid and slurry left behind after pressing stops.
Input lever
Coffee Material
Wheel face
Rest time
The time between roasting and brewing.
Process state
Recipe & Mass Balance
Wheel face
Retained liquid
Water trapped in the bed or left in the brewer.
Input lever
Coffee Material
Detail panel
Roast date
The date the coffee was roasted.
Input lever
Coffee Material
Detail panel
Roast development
The internal development of the roast, not just the color.
Input lever
Coffee Material
Wheel face
Roast level
How light or dark the coffee was roasted.
S
Input lever
Delivery & Mixing
Detail panel
Saturation method
How the brewer ensures all grounds are wetted.
Process state
Delivery & Mixing
Wheel face
Saturation uniformity
How evenly the grounds are wetted.
Input lever
Brewer & Filter Setup
Wheel face
Seal quality
How well the plunger and chamber seal together.
Direct observation
Brewer & Filter Setup
Wheel face
Sediment level
How much solid material reaches the final beverage.
Direct observation
Flow, Pressure & Separation
Detail panel
Separation consistency
How repeatably the brewer separates liquid from grounds.
Direct observation
Time & Sequencing
Detail panel
Separation endpoint
The point where extraction is stopped by separation.
Input lever
Finish & Service
Detail panel
Serve order
The order in which cups are served.
Input lever
Finish & Service
Detail panel
Serve temperature target
The desired temperature at the point of drinking or judging.
Input lever
Time & Sequencing
Detail panel
Serve timing
When the beverage is served after brewing.
Direct observation
Finish & Service
Wheel face
Served consistency
How similar repeated servings or multiple cups are.
Input lever
Thermal Profile
Detail panel
Server / cup preheat
Heating the receiving vessel before brewing or serving.
Input lever
Finish & Service
Detail panel
Server stir
Stirring the receiving vessel after brewing.
Input lever
Finish & Service
Wheel face
Server swirl
Swirling the receiving vessel after brewing.
Input lever
Finish & Service
Wheel face
Service vessel
The cup or serving vessel used for presentation.
Process state
Time & Sequencing
Detail panel
Settling state
How settled the grounds are before pressing.
Input lever
Time & Sequencing
Wheel face
Settling time
The pause that allows grounds to settle before pressing.
Input lever
Delivery & Mixing
Advanced detail
Shake
A stronger agitation move than a swirl.
Input lever
Grind & Particles
Wheel face
Sieving
Separating grounds by particle size after grinding.
Process state
Delivery & Mixing
Wheel face
Slurry homogeneity
How evenly the water and grounds are mixed.
Process state
Thermal Profile
Advanced detail
Slurry temperature curve
How slurry temperature changes over time.
Input lever
Water Chemistry
Advanced detail
Sodium
A mineral ion that can change taste and water balance.
Process state
Coffee Material
Advanced detail
Solubility potential
How readily the coffee’s compounds can dissolve.
Input lever
Recipe & Mass Balance
Wheel face
Stage water masses
How brew water is split across recipe phases.
Direct observation
Grind & Particles
Detail panel
Static / clumping
Electrostatic charge and clump formation after grinding.
Input lever
Delivery & Mixing
Detail panel
Stir depth
How deep the stir tool goes into the slurry.
Input lever
Delivery & Mixing
Wheel face
Stir direction / pattern
The directional path of the stir.
Input lever
Delivery & Mixing
Detail panel
Stir intensity
How forceful or fast the stir is.
Input lever
Time & Sequencing
Wheel face
Stir timing
When stirring happens in the brew.
Input lever
Flow, Pressure & Separation
Detail panel
Stop depth
The physical plunger position where pressing stops.
Input lever
Coffee Material
Wheel face
Storage condition
How the coffee was stored before brewing.
Process state
Finish & Service
Detail panel
Stratification
Layering of temperature or concentration in the beverage.
Cup outcome
Cup Outcome
Wheel face
Sweetness
The perceived sweetness or roundness of the final cup.
Input lever
Delivery & Mixing
Wheel face
Swirl count
The number of swirl motions.
Input lever
Delivery & Mixing
Wheel face
Swirl intensity
How forceful the swirl is.
T
Input lever
Delivery & Mixing
Detail panel
Tap-down
Tapping the brewer to settle grounds or dislodge wall grounds.
Input lever
Recipe & Mass Balance
Detail panel
Target concentrate mass
The intended mass of the undiluted concentrate before bypass.
Input lever
Recipe & Mass Balance
Wheel face
Target output mass
The pre-dilution liquid mass you want to collect before stopping the press.
Input lever
Flow, Pressure & Separation
Wheel face
Target output mass stop
Stopping the press at a specific collected beverage mass.
Input lever
Thermal Profile
Detail panel
Target serving temperature
The temperature at which the beverage should be served or tasted.
Process state
Thermal Profile
Detail panel
Thermal stability
How stable the brew temperature remains during extraction.
Input lever
Time & Sequencing
Wheel face
Timer start rule
The event that starts the timer.
Direct observation
Time & Sequencing
Wheel face
Timing consistency
How repeatably the timing sequence is executed.
Process state
Delivery & Mixing
Wheel face
Turbulence
Fluid motion caused by pouring and agitation.
U
Process state
Grind & Particles
Detail panel
Uniformity
How even the grounds are as a brewing particle system.
Input lever
Brewer & Filter Setup
Wheel face
Upright / inverted orientation
Whether the AeroPress is brewed upright or inverted.
V
Input lever
Coffee Material
Detail panel
Variety
The genetic variety or cultivar of the coffee plant.
W
Direct observation
Water Chemistry
Wheel face
Water cleanliness
The absence of off-flavors from the water itself.
Input lever
Water Chemistry
Wheel face
Water recipe
A deliberate mineral recipe added to low-mineral water.
Input lever
Water Chemistry
Detail panel
Water source
The base water used for brewing.
Input lever
Water Chemistry
Wheel face
Water TDS
The total dissolved solids of the brew water.