Pressure Profiling

Changing brew pressure through different stages of the shot rather than holding it constant.

Filed under

Controls that affect flavour

What it means

Changing brew pressure through different stages of the shot rather than holding it constant. Some baristas ramp up gently, peak, then taper down to refine texture and clarity. It is a legitimate refinement tool, but complicated profiles sitting on top of poor puck prep will reveal the problems more clearly, not conceal them.

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Where this leads

Each one pushes this into the cup, compares it, or helps you act on it.

How the shot starts

Pre-infusion

Control changes show up first at the start of the shot.

Use pre-infusion to smooth the beginning of the shot, not to compensate for careless preparation.

What people mean when they say "extraction"

Espresso Extraction

Use control only to change extraction intentionally.

Separate extraction from strength in your thinking. One asks how much was dissolved, the other how concentrated the drink feels.

How you read the result

Yield

Watch the result, not just the setting.

Think of yield as the result you are aiming for and brewed weight as the way you verify you hit it.

How you read the result

Brew Time

Then see how the control changes the shot rhythm.

Use time as a guide rail alongside yield and taste, not as the whole recipe.