Start by washing your strawberries and removing the stems. You don't need to chop them, just leave them whole. But if there are any bad spots, you can remove those.
3 pounds strawberries
Add the berries to a food processor or blender and puree until smooth and liquid.
Pour the strawberry juice through a strainer. Press the mixture through, so you have mainly just juice below. The less seeds and pulp you get through the strainer the smoother and clearer your jelly will be. You will end up with about 4 cups of juice.
Add the fruit juice, sugar, lemon juice, and pectin to a heavy bottom pot. Cook over medium heat until the sugar is dissolved. The pectin can clump when it is cold, so you might need to whisk it to get it fully incorporated and smooth. Once the sugar is dissolved bring to a boil over medium-high heat, and cook for 3 minutes, stirring frequently.
While the jelly is boiling use a small strainer to scoop away the foam that forms on the top. This step is optional, but it will lead to a clearer jelly.
After 3 minutes, reduce the heat to medium low and let it cook for about 5 more minutes. If you have a thermometer you can test and it should be about 220º F, this is when you know your jelly is done and will set up.
Remove from the heat and let it cool in the pot for 5 minutes.
After 5 minutes divide the jelly into your jars and let it cool completely for the jelly to set up.
Notes
Storing Jelly
Fridge - you can store homemade jelly in an airtight container for up to 2 monthsRoom Temperature - you can store jelly in an airtight container for up to 2 weeks in the pantry.Canning - see the instructions above. Canned jelly will last in a cool dry place for at least 12-18 months. Freezing - store strawberry jelly in an airtight container in the freezer for up to 6 months.