Start by washing your strawberries thoroughly under cold water. Remove the stems and hulls, then chop the berries into small pieces.
You can mash them with a potato masher for a smoother jam or leave them chunkier for more texture. Add sugar to strawberries. Stir and let set for 10 minutes.
Boil the water and pectin together, stirring to combine.
Pour the pectin mixture over the strawberries and sugar. Add the lemon juice. Stir to combine and let stand for a couple of minutes.
Transfer to clean pint mason jars. Seal the jars with lids and let cool before putting in the freezer or fridge.