Jelly made from these crystals is naturally low in fat, and preparing it at home means you control the sweetness of each batch. Laziza Jelly Crystals are a quick-set powder that makes a wobbly, fruity dessert in minutes: just dissolve in hot water, pour into moulds or a dish, and chill until set. Available in a range of flavours, they are a favourite with children and easy to prepare any day of the week.