Boil some water, add 1 cup of green peas, salt, and a pinch of sugar. Boil the green peas on high flame for 3 minutes. Strain them using a sieve and let them cool down.
In a mixer jar, add 2-3 green chilies, 1-inch ginger, and 5-6 garlic cloves. Coarsely crush them without adding water. Keep aside.
In the same jar, add the boiled green peas and pulse-grind them to a coarse texture. Keep aside.
Heat 2 tbsp oil in a pan and add ½ cup chopped onion. Sauté until translucent.
Add the green chili-ginger-garlic paste and sauté well.
Add ½ tsp turmeric powder and mix thoroughly.
Add the coarsely crushed green peas and sauté.
Add 1 medium-sized crushed potato, salt to taste, ½ tsp garam masala, 1 tsp chaat masala, 1 tsp sugar, 1 tsp lemon juice, and some chopped coriander leaves. Mix well.
The stuffing is ready. Keep it aside.