The most common and most likely answer to this crossword clue is the 8 letter word NOISETTE
I've seen this crossword clue in The Daily Telegraph
N
O
I
S
E
T
T
E
More clues leading to the result NOISETTE
- Feeding see, I write crosswords for chocolate!
- Sweet little letter containing crossword compiler’s admission?
- Chocolate leading compiler fails to finish?
- Odour I absorbed - dry English hazelnut chocolate
- Sweet little sound, as you might suppose?
- Nutty chocolate I put in Eton mess
- A little lamb's tail cut by champion dog
- Bit of food cooked on site, served with tea mostly
- One group breaking record that’s nutty
- Sweet piece of meat
Buddy explains!

The straight part
We know that "a bit of lamb" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a bit of lamb = noisette.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 NOISETTE mean?
NOISETTE noun- A small round thick slice of meat (in particular, lamb or veal) that has been deboned.
- A hybrid rose, from the China rose and the musk rose.
- Flavoured with hazelnuts