Ridge gourd/peerkangai kothsu
Peerkangai/Ridgegourd Kothsu  is a low calorie dish which goes well when served over hot steaming Rice with a drizzle of sesame oil and papad as side.
Ingredients:
peerkangai/ridgegourd      -2
shallots                 -4
green chillies             -3
pepper powder           -1/2 tsp
coriander powder         -1 tsp
red chili                -1
mustard seeds            -1/4 tsp
oil                    -2 tsp
curry leaves             -optional
tamarind paste            -1/4 tsp
turmeric                -pinch
salt                    -to taste
Preparation time:15 min
Cooking Time    :30 min
Method:
- Peel the skin and chop ridge gourd into cubes.
- In a kadai add ridge gourd,green chilies, tamarind paste,salt and turmeric.
- Mix for 2 minutes.Add the pepper powder and coriander powder.
- Cover it with a lid and cook ridge gourd in its own water.
- allow it to cool and blend it into a fine puree.
- in a pan heat oil and allow mustard seeds to splutter .Add red chilies , curry leaves.fry onion in it until transluscent.
- Pour the tempering into the puree.
- Serve over Hot Rice .
Serves  4