The most common and most likely answer to this crossword clue is the 10 letter word HISTRIONIC
I've seen this crossword clue in The Times
H
I
S
T
R
I
O
N
I
C
More clues leading to the result HISTRIONIC
- Bloke's not entirely likeable group's breaking camp
- This corn one twice cooked with ham?
- Like ham I repeatedly mixed with this corn
- Overly dramatic choir briefly sing it badly
- Penned by Bach, is trio nicely dramatic?
- Affected by trichinosis – almost collapsing
- That man’s little musical group, iconic, not half theatrical
- This ironic broadcast is overly dramatic
- Theatrical cast sit in choir
- Theatrical cast insist choir gets rid of soprano
Buddy explains!

The straight part
We know that "Like ham" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case like ham = histrionic.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 HISTRIONIC mean?
HISTRIONIC adjective- Of or relating to actors or acting.
- (by extension) Excessively dramatic or emotional, especially with the intention to draw attention.