Khaja - a sweet pastry with thin wafers unique to Bihar. Most famous khajas are from Silao in Nalanda district in Bihar.
Here is a recipe for quick khaja, it can be made within half an hour.
Snack for all occasions. Also goes nicely with drinks.
(Note: Different types of vegetables can be used to make bajka. Such as lauki slices, bhindi cut in small pieces, pumpkin flower, or soaked chan