A taste that remains in your mouth after you've finished eating or drinking something, which can be pleasant or unpleasant.
From 'after' (Old English 'æfter') plus 'taste' (from Old French 'taster'). The compound became common in English in the 1800s.
Sommeliers and food critics study aftertaste intensely because it reveals the actual chemistry of what you ate—metallic, bitter, or sweet aftertastes come from different compounds lingering on your taste buds.
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