Ingredients as they turned out

2 to 3 large onions, sweeter the better
1 potato
A can of peas and carrots
half a can of tomato sauce
hot water
Oil and south indian condiments

Prepare the oil

If you know south indian cooking, you know what to do here. Otherwise, heat the oil and chenna dal until the dal is reddish. Add mustard seeds and fennel seeds (I think) and curry leaves.

Add onions

With in a few seconds add cut onions. Use more onions for sweetness and content. Let them brown

Add potato

Peel, Cut and add the potato. Fry it until it softens.

Add the can of peas

Add the can of peas after draining the water. Fry them for a 5 minutes or so

Add the tomato sauce

Add the tomato sauce and hot water. Boil on medium for 10 to 15 minutes. Add turmeric, salt and pepper.

More stuff

I suppose you can add a couple of fresh peppers for spice

Eat with

Tastes very good with long grained basmati rice. Roti would be my second choice