Supports measured infusion inputs and sensory endpoints. It is not an instruction to improvise pressure equipment; the operational procedure requires separate equipment-specific safety review.
The chapter compares rapid and traditional extraction profiles and identifies timing and process variables.
Arnold characterizes rapid infusion as different rather than inherently better than long infusion and reports that ingredient preparation, pressure cycle, time, and venting change extraction; for one-to-two-minute infusions, seconds can determine whether the result is weak or bitter.
PDF sheet 251
PDF sheet 243
Rapid Infusions, Shifting Pressure
Fresh audit 2026-10-01 after completed 540-page textual and visual reading. PDF 243–251: extraction-variable account confirmed. The text explicitly departs from reported manufacturer guidance on 250–251; no pressure or opening-under-pressure advice is adopted as Academy procedure.
Evidence
Rapid infusion is different rather than inherently better than long infusion. Arnold reports that ingredient preparation, pressure cycle, time, and venting alter extraction; in one-to-two-minute trials, seconds can separate weak from bitter results.
Research annotation
Supports controlled inputs and sensory endpoints. This record is not permission or instruction to improvise pressure equipment; operational use requires equipment-specific safety review.
Locator and verification
Paraphrase verified across rendered PDF sheets 243–251, Rapid Infusions, Shifting Pressure.