Wash tomatoes and boil them in water for 3–4 minutes. Peel off the skin.
Blend the peeled tomatoes into a smooth puree.
Heat oil in a pan, add crushed garlic, and sauté lightly.
Add the tomato puree, cumin powder, black pepper, and salt. Mix well.
Cook on low flame for 8–10 minutes until the sauce thickens.