Daal Kachori and Aloo Tarkari

Name: Daal Kachori and Aloo ki Tarkari
Ingredients: 3 - 4 tbsp oil; 2 pinches mustard seeds; 2 pinches fenugreek seeds; ⅛ tsp nigella seeds; 2 potatoes (large sized); salt (to taste); 1 tsp red chili (crushed); ½ tsp coriander powder; ¼ tsp turmeric; 1 pinch orange food color; 1½ cup water; 1 tsp mixed pickle (or to taste); 2 cups refined flour; 1 tsp salt; 1 tbsp semolina; 2½ tbsp oil; water (as required); oil (for frying)