In a mixing bowl, add 4 cups of besan. Gradually add water to make a thick batter (refer to the video).
Whisk the batter for 2-3 minutes until it becomes light and fluffy.
Add grated potatoes, chopped onion, coriander leaves, chopped green chili, and ginger-garlic paste to the batter.
In a mortar and pestle, crush coriander seeds, black pepper, and ajwain into a coarse powder.
Add the crushed spices, salt, 3 tablespoons of hot oil, and 1 teaspoon of asafoetida to the bhajiya mixture. Mix well.
Add baking soda and lemon juice to the batter. Mix well.
The batter should have a medium-thick consistency that is pourable.
Heat oil in a pan over medium heat for deep frying.
Once the oil is hot enough, drop small balls of batter into it using your hand or two spoons.
Fry the bhajiya on medium flame until they turn golden brown. Remove them and place them on a wire rack to drain excess oil.
Repeat the frying process for the remaining batter.
Kathiyawadi Bhajiya (Gota) is ready to serve. Serve it with chutney and a cup of hot tea.