01 / Search intent answered
Turn the question into a controlled engineering duty
Control acid type, concentration, addition location, mixing and equilibrium measurements without damaging tea stability. The acceptance basis must resolve tea and formula buffering together with acid identity and preparation, then assign operating limits, responsible roles and controlled records for this exact task. Define tea grade and lot variability, extraction and sensory targets, formula, solids and acidity, oxygen and light sensitivity, preservation route, package, production campaign and shelf-life methods. Name the extraction yield convention, actual time-temperature reference, fines and clarity boundary, maximum extract and treated-product hold, approved sensory preparation, color method and light-exposure case so raw-material and process drift can be distinguished. Record every input with units, source, approval status, credible range and decision owner. Keep an unknown visible when it can change sizing, hygiene, packaging, automation, utilities, cost or schedule.