Strawberry Freezer Jam

I made this for the first time yesterday with the help of my Mother in law. It was fairly easy. Here's the recipe:

2 cups strawberries (blended but NOT puree needs to still have some chunks)
4 cups sugar
1 pkg sure jell (the box has a few pkgs in it)
2 Tbsp lemon juice

Mean sugar and strawberries in seperate bowls. then mix together well.
let stand for 10 minutes.
Meanwhile mix the sure jell and lemon juice in a cup and pour into the strawberry/sugar mixuture when ready. mix for 3 minutes. after 3 min you can put into freezer containers. can take up to 24 hours to set.

YOU CANNOT DOUBLE THIS RECIPE!! you have to do it in batches.