Input lever
Coffee Material
Wheel face
Origin
The geographic and agricultural source of the coffee.
AeroPress Wheel Variable
Roast date
Coffee Material · Input lever
The date the coffee was roasted.
Input lever
Coffee Material
Detail panel
Measurement-friendly
Competition practice
Definition
Roast date anchors every rest-time and freshness comparison and should be logged directly rather than inferred later.
Why It Matters
Very fresh coffee can release more CO2 and resist even wetting, while older coffee may lose volatile intensity.
Measurement Options
Calendar date
Days off roast
Page Context
Roast date is part of the Brew Supply AeroPress Wheel and helps brewers describe the date the coffee was roasted.
Related variables
Input lever
Coffee Material
Detail panel
Variety
The genetic variety or cultivar of the coffee plant.
Input lever
Coffee Material
Wheel face
Process
How the coffee was processed after harvest.
Input lever
Coffee Material
Wheel face
Roast level
How light or dark 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
Rest time
The time between roasting and brewing.
Affected outcomes
Measured metric
Cup Outcome
Wheel face
Beverage TDS
Measured total dissolved solids in the served beverage.
Calculated metric
Cup Outcome
Wheel face
Extraction Yield
Calculated percentage of coffee mass extracted.
Measured metric
Cup Outcome
Wheel face
Beverage Yield
The liquid beverage mass collected or served.
Cup outcome
Cup Outcome
Wheel face
Aroma
The smell of the brewed coffee.