Tips: Always remember two things while using rose water, do not add it while syrup is bubbling hot or on fire, and be particular about the quantity mentioned in every recipe, since even few drops of excess rosewater could lend a bitter taste to the final product. In order to prevent center of jamun from not cooking, some prefer to place an unsalted pistachio in the center of every Gulab jamun while making balls, that way the core of Gulab jamun is not left uncooked. If there are cracks in the balls before frying it will burst open while frying, in that case adding a bit of corn flour will surely help.