Strawberry Banana Jam

I made a batch of strawberry banana jam today. The recipe makes about 5 pints. It is easy and delicious.

4 3/4 cups prepared fruit (about 2 quarts strawberries and 3 fully ripe bananas)
3Tblsp lemon juice
6 3/4 cups sugar
1 box sure jell (or a heaping 1/3 cup of bulk Dutch Jel_ which is what I use)
1/2 tsp butter

Stem and thoroughly crush stawberries. Measure 3 1/4cups into 6-8 quart saucepot. Mash bananas thoroughly. Measure 1 1/2 cups and add to pot. Stir in lemon juice.

Measure sugar into separate bowl. Stir sure jell into fruit in saucepot. Add butter. Bring mixture to a full rolling boil on high heat, stirring constantly. Quickly stir in all the sugar. Return to a full rolling boil and boil exactly 1 min. stirring constantly. Remove from heat. Skim off any foam with a metal spoon.

Ladle quickly into hot sterilized jars, filling to within 1/2in of tops. Wipe jar rims and threads. Cover with 2-piece lids and screw tightly. Invert jars 5 min. then turn upright. (you can use the water bath method, but I don't.)