Are you familiar with Tofu? If yes then you might want to try Batagor or baso tahu goreng in indo or fried meatball tofu.
Batagor is one of Bandung's original street foods or well known here as Jajanan Khas Bandung.
Its very popular and easy to find, from traveling vendors to restaurants and yes, it served in peanut sauce.
You can add some ketchup on top to get extra flavor.:-)