Grain used to make a vegan milk (3)

I believe the answer is:

oat

(Other definitions for oat that I've seen before include "Food grain" , "Basis of porridge" , "Cereal plant" , "Cereal grass" , "Cereal (singular)" .)

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.