nonstaple
/ˈnɒnstæpl/Definitions
1. noun
a food that is not a staple or a standard item, especially in a particular region or culture
“The restaurant offered a variety of nonstaples from around the world, including Japanese ramen and Indian curries.”
2. adjective
not a staple or standard item
“The nonstaple ingredients in the recipe added a unique flavor to the dish.”