The most common and most likely answer to this crossword clue is the 7 letter word BUTTERY
I've seen this crossword clue in The Daily Telegraph
B
U
T
T
E
R
Y
More clues leading to the result BUTTERY
Buddy explains!

The straight part
We know that "larder" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case larder = buttery.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 BUTTERY mean?
BUTTERY adjective- Made with or tasting of butter.
- Resembling butter in some way, such as color or texture.
- Marked by insincere flattery; obsequious.
- A room for keeping food or beverages; a storeroom.
- A room in a university where snacks are sold.