Cod with Cashews Baked in Foil Envelopes

Name: Cod with Cashews Baked in Foil Envelopes
Ingredients: 1 garlic clove, finely chopped; 1 red bell pepper, seeds and ribs discarded and cut into long, ¼ inch wide strips; 1 tablespoon shredded fresh ginger (use the large holes of a box grater); 1 tablespoon vegetable oil; 4 ounces sugar snap peas; 4 scallions, white and green parts, chopped; 4 tablespoons soy sauce, divided; 4 tablespoons unsalted butter, divided; Four 6 ounce cod fillets; Salt and freshly ground pepper to taste; ½ cup unsalted roasted cashews, very coarsely chopped