Prepare the Strawberries:
Wash and hull the strawberries.
Mash them using a potato masher or blend them slightly for a smoother texture.
Cook the Fruit:
In a large pot, combine the mashed strawberries, sugar, and lemon juice.
Stir well to mix all ingredients thoroughly.
Add Pectin:
Sprinkle the powdered pectin over the fruit mixture.
Stir continuously to ensure the pectin is fully dissolved.
Boil the Mixture:
Bring the mixture to a rolling boil over medium-high heat.
Continue boiling for about 10 minutes, stirring frequently to prevent sticking.
Test for Doneness:
To check if the jelly has set, place a small spoonful on a chilled plate. If it gels, it's ready.
Jar the Jelly:
Carefully ladle the hot jelly into sterilized jars, leaving about 1/4 inch of headspace.
Wipe the rims clean and seal with lids.
Process the Jars:
Place the sealed jars in a boiling water bath for 10 minutes to ensure proper sealing.
Remove and let them cool completely. You should hear the lids "pop" as they seal.
Store and Serve:
Store the sealed jars in a cool, dark place.
Refrigerate after opening and consume within a few weeks.