first, take the digestive biscuits or marie biscuits should do and crush them into powder.No exact quantities mentioned anywhere, so take a whole pack.then add lil sugar powder if u like it to be sweet, say 2-3 tspoons.Now add 3 spoons of cocoa powder, 3-4 tspoons of milk powder , 3 tspoons of proper gulkand and add around 3-4 tsppons of milk cream so that it ll help make the dough or the mixture easy to mould into ball. now decorate each ball with a gem 🙂 yummy gulkand balls r ready !