Sandwich

A sandwich is a food item that is enjoyed by both humans and Smurfs.

Empath: The Luckiest Smurf stories
Sandwiches with various types of fillings (mostly vegetables) are made and served by Greedy Smurf in the EMPATH: The Luckiest Smurf story series. The most common sandwich that is served is the peanut butter and jelly, which some Smurfs like Empath call "comfort food".