noun
having no sense of taste; taste-blind
Refers to a person's inability to discern or appreciate flavors, often used colloquially for someone who is not picky about food or cannot tell good food from bad.
彼は味覚音痴だから、高い料理を作っても無駄だ。
He has no sense of taste, so it's pointless to cook expensive meals for him.
味覚音痴の人は、味の違いがわからないことが多い。
People who are taste-blind often can't tell the difference between flavors.
Compound of 味覚 (taste) and 音痴 (tone-deafness), literally 'taste tone-deafness'. The term extends the metaphor of being tone-deaf to the sense of taste.