In a medium saucepan, whisk cornstarch, coconut milk, and orange juice until it is a smooth texture. Add chili sauce, ginger, and soy sauce. Cook and stir over medium heat until it thickens (1-2 min).

To prepare the cod with citrus, first zest the grapefruit and lemon (1) and set aside the zest (2), then squeeze the juice (3); you will need about 1 cup of juice in total. Cut the cod fillets into ...