Slice brinjal and put in water to avoid darkening.
Wash and soak tamarind in hot water. After a while squeeze and take the extract from it.
In a cooker, add oil, splutter mustard, few fenugreek and add curry leaves, small onion and garlic.
After sauteing for a few minutes, add sliced brinjal.
Mix it well. When brinjal starts to wilt, add salt, ¼tsp turmeric powder, 2 tsp All purpose Chilli Powder (Kuzhambu milagai powder) and mix well.
Pour tamarind extract water along with half cup of water and keep it for a whistle in cooker.
Adjust salt and chilli powder according to your palate.
Serves good with rice and chapathi.