Good-Cooking - Teriyaki Pot Roast

Ingredients

• 2 (3 to 4 pound) chuck or rump roast
• 1 tablespoon shortening
• 1 clove garlic, crushed
• 1/4 cup soy sauce
• 1/4 cup water
• 1/2 teaspoon ground ginger
• 2 onions, sliced
• 1 tablespoon cornstarch