Aloo Mattar/Potatoes and Peas

This is adapted from Cooking the Indian Way, page 33.

2 Tbsp vegetable or peanut oil
1 tsp chopped fresh ginger
1 clove garlic, pressed
1 small onion, chopped
1/2 tsp salt
3 large potatoes, peeled and chopped
2 cups water
1 10 oz package frozen peas, thawed

Saute ginger, garlic, onion, and salt in oil about 3 minutes, stirring frequently, until mixture is brown and fragrant. Add potatoes and water and stir to combine. Cover skillet, lower heat, and simmer about 20 minutes (We cooked less--maybe our potatoes were cut smaller.) or until potatoes are almost tender. Add peas and simmer 2 or 3 minutes or until peas are heated through.Notes:
Use all purpose potatoes, NOT Russett (baking) potatoes.
You may substitute a 17 oz can of green peas, drained, for the frozen peas.