Boil potatoes till soft. Briefly run the potatoes under cold water and peel them. Set aside.
Toss chopped cilantro, green chili and red onion into a food processor and pulse till finely chopped.
Mash potatoes to an even consistency. If they are getting clumpy, add some olive oil.
Add salt, red chili powder and chopped ingredients into the mashed potato mixture. Stir till well-mixed.
Take fistfuls of the potato mixture and flatten them into patties.
Heat non-stick pan on medium heat. Add oil and when hot, brush the patties with the beaten egg and gently place on pan. Fry each patty roughly 2 minutes per side till golden brown.
Meanwhile, heat the burger bun on a skillet or in the oven. Spread Maggi sauce on each side and place the patty in between.
