Mix together mayo, Brooklyn Delhi Roasted Garlic Achaar and Curry Mustard (or regular mustard) in a katori or small bowl. Taste for heat and add more achaar if necessary. Set aside in fridge.
Place a non-stick pan over medium heat. Add in oil and coat the pan. Add in your paneer slices to the pan and fry until golden brown on both sides, 2-3 minutes.
Transfer paneer to a plate lined with a paper towel. Sprinkle with salt and pepper.
Spread each bread slice with your Garlic Achaar Mayo / Curry Mustard Spread. Layer on lettuce, tomato slices and paneer. Top with the other bread slice. Slice sandwich diagonally.
* You can also toast the bread in the pan you fried the paneer in if you like.