Berry is making waves with her upended definition of what most people consider a pie.. On last night's episode of the currently-airing series—which sees amateur cooks vying for the title of Britain's Best Home Cook,—it was pie week.

1/2 cup sour cream.8 ounces cream cheese, at room temperature.

1/2 cup powdered sugar, plus more for rolling.1 teaspoon freshly grated lemon zest.In a mixer fitted with a paddle, mix the flour and salt in a large bowl.

Add the butter and mix the ingredients together into a sandy, crumbly mixture.In a bowl, combine the sour cream and egg yolk until very smooth.

Add to the flour mixture and mix until the dough comes together; the dough may feel a little dry.

Form into a disk, wrap it in plastic wrap and chill at least 4 hours or overnight..cooked crayfish.

Fresh flat-leaf parsley leaves, for garnish.Place garlic, cut side up, on an 8-inch square of aluminum foil.

Drizzle with 1 1/2 teaspoons oil and wrap in foil to seal.Roast until very soft, about 1 hour and 30 minutes.