A substance added to food or drink to give it a particular taste; the process of adding flavor (British spelling).
From 'flavour' (British spelling) plus the gerund/present participle suffix '-ing' (from Old English), which can create nouns describing an action or substance. This is the British spelling of 'flavoring'.
Food labels say 'natural flavoring' or 'artificial flavoring,' but they don't have to tell you what that actually is—a single 'flavor' can contain hundreds of different chemical compounds!
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