This will do for most curry dishes.
Don't rush it. This should be enough for about 4 batches and will keep in the freezer.
3 onions.
6 fleshy green chillies.
2 inch piece of ginger.
6 garlic cloves.
1 teaspoon of turmeric.
1 teaspoon of corriander.
1 teaspoon of cumin.
2 tablespoons of tomato paste.
3 tablespoons oil or ghee.