Combine finely chopped onion, capsicum, carrots and cabbage in a mixing bowl.
1/2 Cup Carrots (Gajar), 1/4 Cup Green Capsicum (Bell Pepper / Shimla Mirch), 1/4 Cup Onion, 1 Cup Green Cabbage (Patta Gobi)
Add mayonnaise to the chopped vegetables.
4 Tablespoons Mayonnaise
Season with black pepper, chaat masala or amchur (dry mango powder) and salt to taste.
1/2 Teaspoon Black Pepper Powder (Kali Mirch), 1/2 Teaspoon Chaat Masala, 1/2 Teaspoon Salt
Mix all the ingredients well to make the filling.
Spread some butter on one side of a bread. You can cut off the edges of the bread if you want.
12 Slices Bread, 2 Tablespoons Butter
Spread out a large spoon of the filling evenly on the bread and close with a second piece of bread to make a sandwich.
Lightly butter or oil the bread from outside and place on a grill, sandwich maker or pan.
Toast the bread till both sides are lightly brown and crispy.
Mayonnaise sandwiches are ready. Serve them hot on their own or with tomato ketchup or green chutney.