The fruit known for its high pectin content is the apple. Pectin is a naturally occurring carbohydrate found in the cell walls of fruits, and apples are particularly rich in it, especially under ripe conditions. This property makes apples excellent for making jams and jellies, as pectin helps to create a gel-like consistency when the fruit is cooked with sugar. Other fruits with significant pectin levels include citrus fruits, especially oranges and lemons, as well as quinces. The high pectin content in apples varies by variety, with some producing more than others, making certain apples preferable for preserving.