Cocktail and pizza for the audience (9)

I believe the answer is:

margarita

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'cocktail' is the definition.
(I know that Margarita is a type of cocktail)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for margarita that I've seen before include "Type of tequila cocktail" , "Cocktail consisting of tequila and lemon juice" , "Stiff drink" , "Tequila-based cocktail" , "Caribbean island" .)

I've seen this clue in The Daily Express.

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