The most common and most likely answer to this crossword clue is the 4 letter word KALE
I've seen this crossword clue in Independent
K
A
L
E
More clues leading to the result KALE
- Cabbage as starter for knockwurst and beer
- Vegetable ingredient in cock-a-leekie soup
- Vegetable ingredient in cock-a-leekie
- Vegetable for royal beer
- Plant discovered in choppy lake
- Deer about to eat a leafy plant
- Greens producing King’s Head bitter
- Moose comes up eating a vegetable
- “Leak” misspelt is a vegetable
- Cabbage broth is starter in Kinross feast
Buddy explains!

The straight part
We know that "Cabbage" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cabbage = kale.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 KALE mean?
KALE noun- An edible plant, similar to cabbage, with curled leaves that do not form a dense head (Brassica oleracea var. acephala)
- Any of several cabbage-like food plants that are kinds of Brassica oleracea.
- Broth containing kale as a chief ingredient.
- Money.