The most common and most likely answer to this crossword clue is the 4 plus 6 letter word PUFF PASTRY
I've seen this crossword clue in The Daily Telegraph
P
U
F
F
P
A
S
T
R
Y
More clues leading to the result PUFF PASTRY
- Wheezily make it over the line, having snacked in this case?
- Secretaries go after publicity that’s flaky
- Plug by old railway for baked item
- Ad on old railway that could help generate turnover
- Advert over railway for something to eat
- A crust for father’s endeavour following promotion?
- Praise for former railway pie casing
- Papa has fry-ups cooked with fat and a crust of this
- Praise the old man’s attempt to make sausage rolls ingredient?
Buddy explains!
The straight part
We know that "a crust of this" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a crust of this = puff 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.
Crossword Answer definitions
PUFF PASTRY noun- A light, flaky pastry that is made of alternating buttery and floury dough layers by repeatedly folding the rolled pastry into many layers.