Input lever
Flow, Pressure & Separation
Detail panel
Press force
The physical force applied to the plunger.
AeroPress Wheel Variable
Astringency risk
Flow, Pressure & Separation · Risk flag
The risk of a drying, harsh tactile finish.
Risk flag
Flow, Pressure & Separation
Wheel face
Competition practice
Inferred
Definition
Astringency risk is the likelihood that the press behavior drives an unpleasant drying sensation in the cup.
Why It Matters
Late-stage pressure, fines, and overextended separation can all push the cup in this direction.
Risk Note
This page describes a diagnostic warning, not a directly measured variable. It is useful for diagnosis and recipe debugging, but it is not a direct control lever or direct measurement by itself.
Page Context
Astringency risk is part of the Brew Supply AeroPress Wheel and helps brewers describe the risk of a drying, harsh tactile finish.
Related variables
Input lever
Flow, Pressure & Separation
Wheel face
Plunger speed
How quickly the plunger moves downward.
Input lever
Flow, Pressure & Separation
Wheel face
Output flow rate target
The desired liquid output speed during pressing.
Input lever
Flow, Pressure & Separation
Wheel face
Press duration
How long the active press phase takes.
Input lever
Flow, Pressure & Separation
Advanced detail
Pressure ramp
How pressure builds during the press.
Input lever
Flow, Pressure & Separation
Detail panel
Stop depth
The physical plunger position where pressing stops.
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.