Open Sandwich with coriander spread

I am not a big fan of open sandwich unless it is topped with oodles of cheese :) I recently had this sandwich at my collegue's house (prepared by his mom) and it was awesome.. So tried it today.

You need

Bread - 1 pound

Potato - 1 cup boiled and mashed 

Onion - 0.5 cup thinly sliced

Capsicum - 0.5 cup finely chopped

Lemon Juice - 1 tsp

Mustard - 1 tsp

Salt for taste

Oil

For the spread

Curds - 4 tbsp

Coriander leaves - 2 tbsp finely chopped

Green chillis - 4

Tamarind - 1 marble size 

Salt

Method
For the spread, grind everything other than the curd into a fine paste
Add in the curd, keep aside

Heat oil in a pan
Add Mustard and once it splutters add in the onion
Fry till it becomes pink
Add in the capsicum and fry till it becomes soft
Add in the mashed potato and Mix well
Add the salt and lemon and mix
Remove from flame

Take the bread and apply a thick coating of the spread
Put 2 tbsp of potato mixture and spread it evenly on the bread
Cut the bread diangonally
Heat a tawa and roast both sides on medium flame (using Ghee if required)
Serve with Tomato Sauce