Sweet and Sour Stir-Fry

Makes 8 servings

This colorful stir-fry is made with seitan, a high-protein, meat-like ingredient made from wheat. Look for it in the refrigerated section of your favorite natural food store.

1/3 cup ketchup
1/3 cup cider vinegar
1/3 cup brown sugar
2 tablespoons cornstarch
1 tablespoon diced canned chipotle peppers
1/4 teaspoon crushed red pepper
1/2 cup water
2 teaspoons toasted sesame oil
1 8-ounce package seitan, cut into strips
1 red bell pepper, seeded and thinly sliced
1 medium zucchini, thinly sliced
1 cup thinly sliced onion
2 cups mushrooms
2 cups snow peas
8 cups cooked basmati or jasmine rice