Onion Gostu - Simple side dish for idli, dosa, pongal

I love onion esp small onions. My mum uses a lot of small onions. But I do it only if I have alternative for my 1st son. He is ok with grinded one. Most north Indian side dishes are ok with grinded onion tomato paste. But some of the South Indian dishes tastes nice only if you use full onion. This is one such dish. There are 2 different ways you can do Onion gostu or Chettinad Onion Gostu. My cousin always does chettinad version which I will post soon. I seldom do it because of coconut in it. But it can go well with even roti / chappathi also.  Now over to recipe
Ingredients

Small Onion / Shallots - 1.5 cup (slice them into bigger junks) If you want you can replace with red / white onion. I find small onion tastes better
Moong dhal / Pasi Paruppu - 1/4 cup
Tamarind Paste - 3 tablespoon (thick)
Oil - 3 teaspoon
Turmeric powder - 1/4 teaspoon
Sambar powder - 1 teaspoon
Green chillies - 2 (slit them into 2)
Mustard seeds - 1/4 teaspoon
Cumin seeds - 1 /2 teaspoon
Urad dhal - 1/2 teaspoon
Chana dhal / bengal gram dhal - 1/2 teaspoon
Curry leaves - 10-15 leaves
Salt to taste
Coriander leaves - 1 tablespoon (finely chopped)

Method

Cook moong dal with water and turmeric powder. Keep it aside. I have used pressure cooker till one whistle you can cook it with lid closed also
Heat the pan. Add oil. When it is hot add mustard seeds, urad dhal, Chana dal, curry leaves and cumin seeds. Let mustard seeds pop. Add onion and fry till they are soft. Add sambar powder, Salt and tamarind water. Add cooked dhal and enough water.
Let it boil and add coriander leaves. Switch off flame
Serve hot
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