Curried Chickpeas and Tofu

INGREDIENTS

• 1 medium onion, chopped
• 1 minced garlic clove
• 2 tablespoons vegetable oil
• 2 teaspoons ground cumin
• 1 teaspoon ground coriander
• 1/2 teaspoon turmeric
• 1/4 teaspoon ground black pepper
• 1 pinch cayenne (optional)
• 1 cake tofu, cut into 1/2-inch cubes
• 2 cups undrained cooked chickpeas (or one 16-oz. can)
• 2 Tomatoes, chopped
• 1 pinch salt (to taste)
• chopped fresh cilantro (optional)
• plain yogurt (optional)