Simple Dal Tadka

When I have lot of chores to do on a weekend, I opt for this quickly done Dal Tadka. Paired with some spicy oven roasted vegetables (cauliflower/bitter gourd/tindora/potatoes) it is a complete meal which does not demand long time in the kitchen. Now, there are different ways to do a simple dal tadka and this is one of them. You can play around with the dhals used or the spices used and I bet it would turn delicious no matter what. What is your favorite combination?

Ingredients:
Moong Dhal - 1 cup
Onion - 1/2 cup chopped
Tomato - 1/2 chopped
Green chilli - 1 or 2
Turmeric powder - 1/4 tsp
Salt - to taste
Water - 3 1/2 cups
Ginger - 2 tsp - minced
Garlic - 1 tbsp - minced
Oil  - 1 tbsp + 1 tsp
For Tadka:
Mustard seeds - 1/2 tsp
Cumin seeds - 1/4 tsp (optional)
Dry red chillies - 2
Curry leaves - a few (optional)

Method:
Pressure cook moong dhal with a dash of salt, turmeric powder and water (about 3-4 whistles). When done mash with the back of a spoon. Heat oil in a kadai and saute the onion. After a couple of minutes add the minced ginger, garlic and slit green chilli. Saute for 2-3 minutes and add the tomato. Saute with a pinch of salt until the tomato turns mushy. Pour the onion-tomato mixture over the dhal and simmer in low heat until the flavors meld, about 10 minutes. Remove from heat. Heat 1 tsp of oil in the same kadai and add the ingredients for tadka. When the mustard splutters, pour over the dhal. Serve hot with rice/roti and ghee (if desired). Pair with a spicy side dish for a complete meal.
Note: 
1. The ginger and garlic have to be fresh and minced. The paste would not work here.
2. A combination of different dhals can be used viz toor dhal, chana dhal, masoor dhal.