What does it mean to have white stuff in your jelly?

Jelly is typically made from fruit juice or other flavored liquids that are boiled with sugar and then allowed to cool and set. The white stuff in jelly is usually caused by the presence of air bubbles or undissolved sugar crystals. It can also be caused by the addition of certain ingredients, such as cornstarch or gelatin.

If the white stuff is caused by air bubbles, it can be removed by gently stirring or shaking the jelly. If it is caused by undissolved sugar crystals, it can be removed by straining the jelly through a fine mesh sieve. If it is caused by the addition of cornstarch or gelatin, it is usually not possible to remove it.

The white stuff in jelly is not harmful and does not affect the flavor of the jelly. However, it can be unsightly and may make the jelly less appealing.