The most common and most likely answer to this crossword clue is the 6 letter word PASTRY
I've seen this crossword clue in The Guardian
P
A
S
T
R
Y
More clues leading to the result PASTRY
- King tucks into unhealthy-looking croissant?
- Danish father’s go?
- . Dad’s attempt to get food
- After fool’s sent back, taste sweet dish
- Liberal Party’s dough
- Raised energy, endeavour and turnover, say
- Cake gone – and most of whiskey
- Tart old line?
- Assistant’s experiment to make cake
- Cornish speciality has recipe inside for its outside
Buddy explains!

The straight part
We know that "Cake" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cake = pastry.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 PASTRY mean?
PASTRY noun- A baked food item made from flour and fat pastes such as pie crust; also tarts, bear claws, napoleons, puff pastries, etc.
- The food group formed by the various kinds of pastries.
- The type of light flour-based dough used in pastries.
- A place where pastry is made.
- The act or art of making pastry.