The most common and most likely answer to this crossword clue is the 3 letter word YAM
I've seen this crossword clue in The Times
Y
A
M
More clues leading to the result YAM
- Pulled up part of spring vegetable
- Yours truly’s up for eating a potato
- Vegetable they finally selected in the morning
- Root vegetable taking a month to come up
- Vegetable, one of twelve sent back
- Root may spread
- Root crop available with month returning
- Vegetable from month back
- Root for mounting might
- Starchy tuber a woman raised
Buddy explains!

The straight part
We know that "vegetable" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case vegetable = yam.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does YAM mean?
YAM noun- Any climbing vine of the genus Dioscorea in the Eastern and Western hemispheres, usually cultivated.
- The edible, starchy, tuberous root of that plant, a tropical staple food.
- A sweet potato; a tuber from the species Ipomoea batatas.
- Potato.
- A oca; a tuber from the species Oxalis tuberosa.
- Taro.
- An orange-brown colour, like the flesh of the yam.
- (Cumberland) home