Wash the chana dal well and place in a pressure cooker. Add haldi and ½ cup water and pressure cook on high for about 8 whistles. Remove from heat and keep aside.
Meanwhile, wash and peel the beerakaya. Chop into ½ inch pieces. Cut the onion finely. Slit the green chillies. Chop coriander leaves. Keep aside.
Heat oil in a kadai and temper with mustard and cumin seeds. Sauté for a few seconds.
Then add curry leaves, dry red chilli and garlic cloves. Sauté for 1-2 minutes.
Add chopped onion and fry till the onions turn translucent.
Add the ginger-garlic paste and sauté for a minute.
Then add the chopped ridge gourd and mix well.
Add salt, turmeric powder, red chilli powder and garam masala.
Mix well and cook with a lid on till the ridge gourd turns tender.
Add the cooked dal, combine well and simmer on low-medium heat for about 5 minutes. The dal consistency will thicken
Remove from heat and garnish with coriander leaves.
Serve Ridge Gourd and Chana Dal Curry with Rice or Phulkas