Enter a clue or pattern or both:
The Clue
Ester used in food flavorings (7 letter answer)
The Answer
CITRATE
Tags
Notes
The answer CITRATE is so rare that it appears less than once every 2500 puzzles.
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Definition
CITRATE as a noun:
1. a salt or ester of citric acid
CITRATE as a verb:
1. cause to form a salt or ester of citric acid