The Collaborative International Dictionary
Acidulating
Acidulate \A*cid"u*late\, v. t. [imp. & p. p. Acidulated; p.
pr. & vb. n. Acidulating.] [Cf. F. aciduler. See
Acidulous.]
To make sour or acid in a moderate degree; to sour somewhat.
--Arbuthnot.
Wiktionary
acidulating
vb. (present participle of acidulate English)