Sweet fruit preserves such as jams, jellies and marmalades are often eaten at breakfast on bread or as an ingredient of a pastry or dessert.
Jam refers to a product made of whole fruit cut into pieces or crushed, then heated with water and sugar until it reaches "jelling" or "setting" point, achieved through the action of natural or added pectin, then sealed in containers.
A jelly is a clear or translucent fruit spread made by a process similar to that used for making jam, with the additional steps of adding extra liquid and filtering out the fruit pulp after the initial cooking.
Marmalade is a fruit preserve made from the juice and peel of citrus fruits boiled with sugar and water. It can be produced from lemons, limes, grapefruits, mandarins, bergamots and other citrus fruit combinations. Marmalade is distinguished from jam by the inclusion of citrus peel, and the addition of a larger quantity of water. It resembles a jelly but it is distinguished from a jelly by the fact that the fruit pulp is not strained out of the liquid.