For preparing traditional moru curry, first grind the ingredients: grated coconut, turmeric, shallots, garlic and cumin seeds to a fine paste. Keep this aside.
Cook the cucumber pieces with 1/2 cup water and required salt.
Blend the sour curd in a blender and add the ground coconut paste. Mix gently and add 1/4 cup of water.
Add required salt and add the cooked cucumber pieces. Keep stirring in very low heat until steam appears on ladle. Do not allow to boil and remove the moru curry from fire.
For seasoning traditional moru curry, heat ghee and oil. Splutter mustard seeds and fenugreek seeds. Fry shallots, dry red chilly and curry leaves. Pour the seasoning into the moru curry.
Tips for traditional moru curry:
1)Sour curd is preferred.
Do not make the moru too much wattery.
Adding ghee while seasoning is a must.