Wash, peel and cube 3 medium potatoes into 1 ½ inch cubes
Heat 1 ½ tbs oil over medium high. Do not let it smoke
To hot oil, add ½ tsp of cumin powder, ½ tsp cumin seed and ½ tsp mustard seed until they begin to crack in the oil
When spices are cracking and popping, add diced potatoes and 1 cup frozen peas. Stir until vegetables are well covered by oil and spices
Once combined add ½ tsp salt, ½ tsp turmeric powder, ½ tsp chilli powder. Stir in and then add 1 ½ cups water and cover over medium heat for 10-15 minutes
When potatoes are cooked but not mushy, add 1 fresh diced tomato or 1 tbs tomato paste and 1 tsp sugar
Cook for further 5 minutes
Remove from heat and add fresh chopped coriander to garnish