Complex sentence: He thought elements of the meal was "very clever indeed", such as fois gras ice cream and a sausage roll he described as a "colossus", but that the desserts were a disappointment, calling an olive oil parfait a "gloopy mess".
Split into simpler sentences: He thought elements of the meal was "very clever indeed", such as fois gras ice cream and a sausage roll he described as a "colossus". He however thought that the desserts were a disappointment, and called an olive oil parfait a "gloopy mess".