Processed
Wine Grade
A tier
Wine-grade potassium bicarbonate is the cellar salt used to deacidify a sharp must or wine, dropping titratable acidity by precipitating tartrate. Oenological purity and a known assay matter more here than a bakery grind. Winemakers dose it by calculation, not by taste-and-hope, because you can flatten a wine into soap if you are generous. It is not baking soda for a cake, even though the molecule can leaven. Buy it from a wine-supply house when the job is a tank, and buy food-grade powder when the job is a muffin. Cold stabilisation still has to finish the work.
Track this ingredient
Characteristics
Preparations
Traits
History
European cellars adopted potassium bicarbonate as a permitted deacidification salt.
Oenological grades with declared assay separated from generic food KHCO3.
New-world cool-climate vintages made wine-grade bicarbonate a harvest toolkit staple.
Low-intervention debates did not remove KHCO3 from the legal cellar cupboard.