Easy Curry Sauce

Instructions

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1. 1 Gather all ingredients.
2. 2 Heat oil and margarine in a small skillet or wok over medium-high heat. Add onion and sauté until very brown, 10 to 15 minutes; do not undercook or sauce will taste funny.
3. 3 Add garlic and ginger to onions; sauté for an additional 2 minutes.
4. 4 Transfer mixture to a food processor and blend until smooth. Do not rinse the food processor. Place blended onion mixture in a large saucepan. Stir in coriander, cumin, cinnamon, black pepper, cayenne pepper, and turmeric; cook over low heat until mixture is thick and has a paste-like consistency.
5. 5 Purée tomatoes, chile peppers, and cilantro in the food processor until smooth.
6. 6 Add to onion mixture and stir over low heat, cooking off moisture from tomatoes and peppers.
7. 7 Add yogurt a little bit at a time, stirring constantly to avoid curdling.
8. 8 Blend mixture in the food processor until smooth
9. 9 Return to saucepan, add water, and increase heat to high; bring sauce to a rolling boil. Cover saucepan and boil for 3 to 5 minutes.
10. 10 Reduce heat and simmer until desired consistency is reached.