Snow Pea and Mizuna Stir Fry

Name: Snow Pea and Mizuna Stir Fry
Ingredients: 1 cup brown jasmine rice; 1 3/4 cups water; 1 14 oz package extra firm tofu; 1 tablespoon peanut oil; 1 tablespoon low sodium soy sauce; 2 teaspoons minced garlic; 3/4 pound snow peas; 1 1/2 cups sweet onion, coarsely chopped; 1 cup carrots, medium dice; 1/2 pound mizuna or other bitter green; 3 tablespoons dark brown sugar; 1 1/2 tablespoons tamari; 2 tablespoons low sodium soy sauce; 2 tablespoons mirin (rice cooking wine); 1/4 teaspoon cayenne (optional); 1/4 cup water; 1 tablespoon arrowroot flour