Heat 1 tbsp cooking oil in a pan and add 1 tsp of urad dal along with 1 tsp of chana dal. Fry them nicely for a few minutes until they change color.
Now, put 3 cloves of garlic (large, deskinned), 5 pieces of onions (shallots, whole), and 4 pieces of dry red chilies (whole, without stalk).
Fry them nicely for about 3 minutes until they change color and the onions turn translucent, as shown in the image below.
Now, add 1 cup of pumpkin (roughly diced) to these ingredients in the pan.
Stir continuously and fry everything for a few minutes until it starts releasing oil.
Then, add ½ cup tomato (thin slices), 1 piece tamarind (large lemon size), and salt to taste. (Pro tip: Do not add too much of tomato and tamarind or else the chutney will be too sour).
Stir constantly to fry them for 3 minutes until the tomatoes are cooked properly.
Now, transfer the ingredients into a mixer grinder.
Leave the oil behind in the pan.
Grind the chutney ingredients to a smooth and fine paste. Transfer it to a bowl.
In the pan, add ½ tsp mustard seeds, 1 tsp urad dal, 1 tsp chana dal, and few curry leaves to make the tadka for the pumpkin chutney. Fry for a few seconds. Pour it in the chutney in the bowl. Your delicious homemade pumpkin chutney is ready.