Sieve the flour, add sufficient water and make a fine batter. To this batter, add lemon salt, sugar, cooking soda, turmeric, salt to taste and mix well until the batter rises and foam forms. Add water to the pressure cooker and boil for some time. In another small bowl, add the batter and arrange in the cooker. Cook the batter on steam for 15 minutes. Remove bowl from the cooker, cut the dhoklas into diamond shapes and arrange them on a plate. Heat oil in a pan and season with mustard seeds, red chilies, asafoetida, green chilies and pour over the dhoklas. Sprinkle grated coconut on the top of the dhoklas, garnish with cilantro and serve hot.