1 tablespoon vegetable oil
2 medium onions, minced
1 clove garlic, minced
2 teaspoons grated fresh ginger
1 fresh, hot green chili pepper, minced
1 tablespoon ground coriander
2 teaspoons ground cumin
1/2 teaspoon ground cayenne pepper (I used a quarter of this because my cayenne is extremely hot)
1 teaspoon ground turmeric
2 teaspoons cumin seeds, toasted and ground
1 tablespoon amchoor powder (see note)
2 teaspoons paprika
1 teaspoon garam masala
2 cups tomatoes, chopped small or 1 15-ounce can of whole tomatoes with their juices, chopped small
2/3 cup water
4 cups cooked chickpeas or 2 (15-ounce) cans chickpeas, drained and rinsed
1/2 teaspoon salt
1/2 lemon (juiced) (see note; I used a whole lemon to swap for the amchoor powder)