- Firstly rinse tinda (apple gourds) very well in water. Also rinse the other veggies like tomatoes. Keep aside. Now in a blender or grinder jar or food processor/chopper, take ½ cup roughly chopped onions, 1 to 1.25 cups chopped tomatoes, 4 medium garlic cloves,and ½ inch ginger Without adding any water grind to a fine paste. Keep aside. Peel or scrape the outer green skin of the apple gourds. Now make a cross section slice on each tinda without cutting it entirely. Slice all the apple gourds this way. Keep aside. Now take all of the ground onion-tomato paste in a bowl. Add ½ teaspoon turmeric powder, ½ teaspoon red chilli powder, ½ teaspoon coriander powder, ½ teaspoon cumin powder, ½ teaspoon garam masala powder, ½ teaspoon dry mango powder, 1 pinch of asafoetida and salt as required. Mix the spice powders very well with the onion-tomato paste. Then add the chopped tinda and cook for 5-10 minutes and garnish with coriander and serve hot.