Pour cooking oil in a mixing bowl and add 1/4th cup of water.
Now add green chili paste, mint leaves paste, turmeric, red chili powder and salt to taste. Stir well.
Add gram flour & rice flour to the liquid mixture; mix well with a spatula to a form a soft dough.
To this now add grated potatoes and again give it a quick mix.
Lastly, add one tbsp oil to smoothen the dough.
Heat oil in a deep deep bottom pan.
Take Sev maker machine with disk and grease the inside of it with oil.
Now fill the container with prepared dough and close it tightly.
Add the Sev directly into the oil; prepare roundish shapes of the Sev. Move the machine in circular motion. Be careful while frying, the steam that comes off is too hot, you got to take care of your hands.
Fry both the sides till it becomes golden & crispy. Remove it using a slotted spoon and place it on kitchen towel & on a plate. Continue the same process for remaining dough.