coup

Reader's Digest 5月号、韓国料理の記事で "Hongeo" と言う魚（料理？）を食べている個所です。
Knowing it was an atrocious idea, I raised a slice to my nose and inhaled deeply. This was followed by a coughing fit and the inevitable "car crash" moment - taking a second inhalation of the aroma just to make sure it was still hideous.Tasting time provided something of a coup - unable to chew through the cartilage-filled flesh, I experienced my first retch of the day and in the absence of any napkins, spat a half-chewed chunk of bones into my hand.
文中の "coup" の意味として、クーデターしか知らないので、幾らなんでもそれは大げさで、単に
"yuk!" と言う感じですが、 "coup" に私の知らない意味があるに違いありません。
・Oxford English Dictionary: an instance of successfully achieving something difficult: it was a major coup to get such a prestigious contract
・Random House Unabridged Dictionary: a highly successful, unexpected stroke, act, or move; a clever action or accomplishment.
・Cambridge Advanced Learner's English Dictionary: an unexpectedly successful achievementIt was a tremendous coup for the local paper to get an exclusive interview with Prince Charles.: I got him to come to a party which was something of a coup.
飲み込めなかったので "successful" とは言い難いと思いますが、臭いも悪そうで、 むせながらも口に入れられたので、記事を書いた本人としては "coup" だったと大げさに書いたのでしょう。　いずれにせよ食べてみたい魚ではありません。