Make the Batter : Before your start mixing the ingredients, pour hot water in the steamer or Insant Pot. Mix besan, sooji, ginger, chilies, turmeric, sugar, salt, lemon juice, oil, and water into a smooth batter.The batter should be the consistency of a pancake batter.
Add Leavening : Add Eno fruit salt or baking soda right before steaming and mix gently until you see bubbles. Don't overmix it, just until you have incorporated it into the batter.
Grease Pan & Pour Batter : Grease the steaming container and pour the batter evenly.
Steam Dhokla : Once the steamer or the water in the Instant Pot is heated, place a trivet followed by the pan. Close the lid, seal the vent and pressure cook on normal for 15 minutes until a knife inserted comes out clean.
Cool the Khaman : Remove the Khaman and let it cool for 10 minutes. For a moist Khaman, sprinkle ¼ cup of water on Khaman.
Temper the Khaman : Heat oil, add mustard seeds, urad dal, curry leaves, and chilies for tempering. Pour tempering over dhokla, and garnish with chopped cilantro and grated coconut.
Serve : Cut dhokla into pieces and serve warm or at room temperature.