v. make slightly acidic; embitter, make sour

The following video provides you with the correct English pronunciation of the word "acidulate", to help you become a better English speaker.

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Verb
1. make sour or more sour
(synonym) sour, acidify, acetify
(hypernym) change taste
(derivation) acid

v. acidulate, make slightly acidic, embitter

(v. t.)
To make sour or acid in a moderate degree; to sour somewhat.
  

To give a dish or liquid a slightly acidic, tart or piquant taste by adding some lemon juice, vinegar, or unripened fruit juice. Also, one can acidulate fresh cream by adding lemon juice to get sour cream.