Authentic Tomato Curry from Pune, India

Ingredients:
Okra
Cauliflower
Potato
Eggplant
Green peas
1 teaspoon cumin seeds
1 teaspoon mustard seeds
Fenugreek seeds
Crushed ginger
3–4 tablespoons gram flour (chickpea flour)
10–12 tomatoes, puréed
1 teaspoon cumin powder
Green chilies
1–2 cloves
3–4 tablespoons oil
Ground black pepper (or red chili powder)
Salt
Water
Served with rice