Cheese: actor appearing upset with it (7)
I believe the answer is:
ricotta
'cheese' is the definition.
(ricotta is a kind of cheese)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for ricotta that I've seen before include "Italian 4 across" , "Italian 8 across" , "Soft white cheese used in Italian cooking" , "may come from Italian press?" , "cheese, Italian style" .)