Step 1

Peel and slice the onions, then heat some oil in a frying pan, add the onions and gently fry them until they go dark brown (make sure they don't burn) - it will take at least 20 minutes

Step 2

Next, slice the ginger, chillies and garlic and add them to the cooked onions, keep stirring over a gentle heat

Step 3

Add the coriander and cook for a further 5 minutes

Step 4

If the mixture starts to stick to the pan add a splash of water

Step 5

Now add the cumin, turmeric and garam masala and stir

Step 6

Finally, add the finely chopped tomatoes, a couple of cups of water, sugar and salt

Step 7

Leave the mixture to simmer over a low heat for about 15 minutes - done!

Step 8

Now you can either leave the mixture to cool, divide it into portions and freeze, or cook some meat, mix it up and enjoy your delicious curry