Grilled Chicken Liver Pate and Blackberry Crostini

Name: Grilled Chicken Liver Pate and Blackberry Crostini
Ingredients: 1 pound chicken livers (about 2 cups); 2-3 cups whole milk; Extra-virgin olive oil (for brushing); Kosher salt and freshly ground black pepper; 10 tablespoons (1 1/4 sticks) chilled unsalted butter, cut into 1/2' cubes, divided; 2 tablespoons minced shallot; 1 teaspoon fresh thyme leaves; 1 /3 cup bourbon; 2 tablespoons heavy cream; 1 /8 teaspoon (or more) ground allspice; 8 1/4'-thick slices country-style rye bread; Blackberry Salad; 1 bunch radishes (about 6 oz.), trimmed, very thinly sliced