IPA: /ˈstjuːəbl/
KK: /ˈstjuːəbl/
Something that can be cooked slowly in liquid, usually in a pot, to make a dish called stew.
The recipe calls for stewing the vegetables until they are tender.
Stewable is formed from "stew" (from Old French *estuver*, meaning to cook slowly) and "-able" (meaning capable of). The word "stewable" refers to something that is capable of being cooked in a stew.
Think of the word 'stew' which means to cook slowly, and remember that 'stewable' describes something that can be cooked in that way.