The most common and most likely answer to this crossword clue is the 6 letter word LOAVES
I've seen this crossword clue in The Guardian
L
O
A
V
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Buddy explains!
The straight part
We know that "seen regularly after meat or sugar" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case seen regularly after meat or sugar = loaves.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 LOAVES mean?
LOAVES noun- (also loaf of bread) A block of bread after baking.
- Any solid block of food, such as meat or sugar.
- Shortened from "loaf of bread", the brain or the head (mainly in the phrase use one's loaf).
- A solid block of soap, from which standard bars are cut.
- An offer; choice; an opportunity; chance.