The most common and most likely answer to this crossword clue is the 10 letter word PATTY-CAKE
I've seen this crossword clue in Financial Times
P
A
T
T
Y
-
C
A
K
E
Buddy explains!

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 PATTY-CAKE mean?
PATTY-CAKE noun- A children's clapping game, played while reciting a rhyme about baking a cake.
- A cupcake or fairy cake.