Mix all the chopped vegetables . Add mayonnaise, salt and pepper. Mix well and keep it aside.
Potato Patty
Mix boiled and mashed potatoes, capsicum, carrot, peas. Add ginger and garlic paste. Add garam masala, salt and red chili powder. Add bread crumbs to it and mix well. Make small balls of it and give it a round shape.
Heat oil in a pan. Shallow fry the patty till golden brown on both sides. Keep them aside.
Assembling Sandwich
Take two slices of bread and apply butter over it.
On one slice apply the green chutney and on the other apply the tomato ketchup.
Put a tbsp of cabbage filling on one slice. Put a patty over it. Cover the sandwich with the other slice of bread.
Grill the sandwich in a sandwich maker till golden and crispy.
Cut the sandwich diagonally. Sprinkle the grated cheese, chat masala, oregano and chili flakes. Serve it with green coriander chutney and tomato ketchup.`