I've been using it for nearly 10 years. Onions, g & g, tomato, a few base spices and some base gravy, pre-cooked lamb. Throw in a few tablespoons of this paste along with whatever else you fancy. I usually do it in the pressure cooker.
This paste has rescued more than 1 ordinary curry. On the odd occasion when something hadn't worked, a tablespoon of this paste has turned it into a presentable dish.