Peel the potato skin and cube into 2 inch pieces.
Heat a non stick pan with oil, add bay leaf, cumin seeds.
When cumin crackles, add minced garlic. Saute well, then add finely chopped onions, saute well.
Now add the cubed potatoes and simmer with lid covered. Potatoes become soft, now add tomatoes, salt turmeric powder and simmer again for 10 mins.
Next add all the spice powders and saute well. Add 1/2 water and let it cook well.
Simmer till the gravy thickens and aloo is cooked well.
Finally garnish with coriander leaves. Sim for 5 mins.
Serve with rotis.