Rasgulla Recipe | Bengali Rosogulla | How to make Sponge Rasgulla with step by step photo and video recipe. chenna based sweet is one of the common sweets made in bengali dessert which is known for its spongy and juicy texture. rasgulla is one such basic sweet which is made by curdling or spoiling milk and boiling in sugar water. the same process is made for other bengali sweets but this recipe is the basic chenna based sweet.