Wash and clean berries, 3 pounds. Cover with water and cook until desired strength or color. Strain and measure juice to specified amount. If not enough juice, add water and restrain fruit. For 4 cups juice use 5 1/2 cups sugar, 1 box Sure Jell fruit pectin, 1/4 cup lemon juice if not tart enough.
Measure sugar and set aside. Do not reduce amount of sugar. Stir Sure Jell and lemon juice into mayhaw juice in large pan to allow for rolling boil. Bring to a full, rolling boil over high heat, stirring constantly. At once stir in sugar. Stir and bring back to a full rolling boil, a boil that cannot be stirred down and boil hard 1 minute. Stir constantly. Remove from heat. Let set a few minutes and skim off foam. Immediately put in jars, clean top of jars. Seal jars with new lids, following box directions. Let jelly stand until cool and set.