Heat the oil and fry the onion until soft.
Add the garlic and spices. Fry for about 30 seconds until fragrant.
Add the mince and cook until browned, breaking it up with a spoon.
Stir in the tomato or tomato paste.
Add the potatoes if using, then pour in the stock or water.
Stir in the chutney, salt, and pepper.
Simmer uncovered for 20–30 minutes, stirring occasionally, until the potatoes are soft and the sauce has thickened.
Add peas during the last 5 minutes of cooking.