Tomato juice, e.g., chemically (4)

I believe the answer is:

acid

(Other definitions for acid that I've seen before include "scathing" , "Bitter - drug" , "Tart, sour" , "Substance with pH of less than 7" , "Caustic and biting" .)

I've seen this clue in the Universal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.