Based on the context and the answer, generate a question. 

Context: Today me and my son had quite a bit of fun together . We had an impromptu picnic in the park . It was such a nice day I decided why sit at home or in a crowded restaurant . We listened to our new favorite song , " American Boy " by Estelle featuring Kanye West .

Answer:

Sandwiches



What kind of food would they have eaten ?