Add strawberries, lemon juice, and 2 teaspoons of calcium water to a 5-quart pot, bring to a boil.
Mix 2 teaspoons of pectin powder and sugar in a bowl.
Add sugar mixture to strawberries and return to a boil. Stirring frequently to not burn on the bottom.
Once the mixture has been brought to the second boil it is ready to pour up into your hot, sterilized jars.
Follow the directions on the pectin product that you use for recipe alterations. This recipe uses Pomona's Pectin which we like because it uses a lower amount of sugar.