1 tablespoon safflower oil 1½ cups finely chopped onion 1 tablespoon plus 2 teaspoons minced garlic (from 4 cloves) 2 tablespoons finely grated peeled fresh ginger (from a 2-inch piece) 1 or 2 green Thai chiles, jalapeno chiles, or other fresh chiles, finely chopped, plus more, sliced, for serving 1 teaspoon ground cumin 1 teaspoon ground coriander ¼ teaspoon ground cinnamon ¼ teaspoon ground turmeric 1 can (15 ounces) peeled plum tomatoes, coarsely chopped, with juice 4 cups cooked beans, plus 2 cups cooking liquid Pinch of coarse salt Yogurt, cilantro sprigs, and pita chips, for serving

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