The phrase "to form a sandwich" means to place something between two slices of bread or other similar food items.
Sentences with «to form a sandwich»
This book report project contains 7 templates that are stapled together at the top to form a sandwich flip book. (uniqueteachingresources.com)
Two tortillas form a sandwich that can be filled with sliced fruits and cheeses or in this case with a sweet ricotta cheese filling and chocolate morsels. (fieryfoodscentral.com)
«The graphene forms a sandwich structure with the carbon nitride nanosheets and results in further redistribution of electrons. (sciencedaily.com)