Why does fruit float in jam?
A. Fruit was not fully ripe, was not thoroughly crushed or ground, was not cooked long enough, or was not properly packed in glasses or jar. Use appropriate procedures to prevent floating fruit. SOURCE:How To Make Jellies, Jams, and Preserves At Home. United States Department of Agriculture. Extension Service. Superintendent of Documents, Washington, D.C. Home and Garden Bulletin Number 56.
