makes 8 oz of jam
Combine strawberries and lemon juice in a saucepan or pot. Gradually stir in pectin. Bring mixture to a full rolling boil that cannot be stirred down, over high heat, stirring constantly.
Add sugar, stirring to dissolve. Return mixture to a full rolling boil. Boil hard 1 minute, stirring constantly. Remove from heat. Skim foam if necessary.
Ladle hot jam into a hot jar leaving a ¼ inch headspace. Remove air bubbles. Wipe jar rim and seal jar
Jam keeps for 4-6 weeks. For canning/jarring instructions, see others guides.