Pectin is present in all fruits, but fruits vary in the amount of pectin they contain. Fruits high in pectin include apples, plums, cranberries, raspberries, and citrus peel. These and other fruits high in pectin can be made into jams and jellies without any added pectin.
Pectin thickens and, in the presence of acid and high amounts of sugar, it gels. Pectin gels are clear, not cloudy, and they have an attractive sheen and clean flavor. This makes pectin a great choice with fruit products. Pectin is commonly used in mirrors, glazes, jams and jellies, bakery fillings, and fruit confections. It can be purchased as a dry powder, which is typically extracted and purified from citrus peel or apple skins.