Step 1: Prepare the Potato Mixture : Boil potatoes until tender, peel, and mash them in a large bowl. Add boiled peas, chopped onions, green chilies, ginger paste, garam masala, cumin, coriander powder, red chili powder, salt, and chopped coriander. Mix well. Add cornstarch or breadcrumbs if needed to help bind the mixture.
Step 2: Shape the Tikkis : Divide the mixture into 6–8 equal portions. Roll each portion into a ball, then flatten gently to form round patties about 1/2 inch thick.
Step 3: Cook the Tikkis : Heat oil in a non-stick skillet over medium heat. Shallow fry the patties for 3–4 minutes per side until golden brown and crisp. Remove and drain on paper towels to remove excess oil.
Step 4: Prepare Coriander Dip : In a blender, combine coriander leaves, mint leaves, green chili, lemon juice, cumin powder, salt, and water. Blend to a smooth, pourable consistency. Adjust water as needed.