Squash Blossom Chile Relleno with Walnut Cream Sauce

Name: Squash Blossom Chile Relleno with Walnut Cream Sauce
Ingredients: 1 cup shelled walnut halves; 2 cups milk, or more as needed, divided; 0.25 pound crumbled queso fresco; 1.5 cups sour cream; 1.5 tablespoons white sugar; 0.25 teaspoon ground cinnamon; 6 poblano peppers; 1 pound chorizo sausage; 1 cup squash blossoms, chopped; 0.5 cup black beans, rinsed and drained; 0.5 cup whole kernel corn, drained; 1.5 cups shredded Mexican cheese blend; 3 eggs, separated; 1 tablespoon all-purpose flour; 1 cup all-purpose flour; vegetable oil for frying; 1 teaspoon pomegranate seeds, or to taste; 1 teaspoon chopped fresh cilantro, or to taste