buon appetito (phraseologicalUnit):
eet smakelijk(en) used to wish someone enjoyment of the meal they are about to eat., smakelijk(en) used to wish someone enjoyment of the meal they are about to eat., smakelijk eten(en) used to wish someone enjoyment of the meal they are about to eat.
Via: Dbnary en WikiWoordenboeken
Via: Memodata.com