Toward the end of roasting, as the skin is crisping, Mr. Mattos calls for brushing the pieces with yogurt.

WSJ: Ignacio Mattos's Fennel, Chili and Yogurt Roast Chicken with Parsley Salad | Slow Food Fast

This is particularly true of hotels and how they deal with toasting bread, frying eggs, arranging lettuce, crisping bacon and cooking French fries.

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