cordon bleu
US /ˌkɔːr.dɑːn ˈbluː/
UK /ˌkɔːr.dɑːn ˈbluː/

1.
a dish of meat (typically veal or chicken) pounded thin, wrapped around cheese and ham, then breaded and pan-fried or baked.
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For dinner, we had chicken cordon bleu with a side of roasted vegetables.
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The restaurant is famous for its veal cordon bleu.
2.
a cook of the highest class.
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She trained at a prestigious culinary school and is now considered a true cordon bleu.
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Only a cordon bleu could create such a complex and delicious dish.