Drain peas and rinse a few times until the water runs clear.

Add to a food processor and purée until the mixture is a fine grainy paste. Set aside.

Add flour, baking powder, cornstarch, and garam masala to a large bowl. Mix thoroughly.

Transfer the pea mixture along with the water to the flour mixture and stir to incorporate. Add and mix in cilantro and salt to taste to the flour-pea mixture. Mix thoroughly. Cover and set aside to rest for one hour.

Heat oil on medium heat. Oil your hands and form the batter into patties and fry in batches until browned on both sides. Total cooking time take about four to five minutes per batch depending on how thick you make them.