Beef satay without the skewers! You can serve this steak with your usual steak side dishes, or it is equally good over a bed of greens tossed in a light Thai vinaigrette or a bit of the peanut sauce.
2 tablespoons vegetable oil
1 medium onion, chopped
1 (1-inch) piece of ginger, peeled and minced
1—3 serrano chilies, seeded and minced
1 cup water
1 pound chopped canned tomatoes with the juice
1 teaspoon salt
1 teaspoon sugar