The phrase "homemade formula" refers to a type of food or drink made at home using specific ingredients, instead of buying a ready-made version from a store. Full definition
Use the kefir for making homemade formula if you have no local raw milk sources. (thehealthyhomeeconomist.com)
I assumed I wasn't making enough milk to satisfy her, so we started supplementing with homemade formula. (wellnessmama.com)
She additionally critiques a variety of homemade formula recipes mothers are using today and suggests the best attempts to optimize nutrition and immunity in the artificially fed baby. (babyreference.com)