If you are panning to can this jam, have your sterilized jars, lids, bands, canning funnel, canning tongs, and large pot for boiling water ready ahead of time.
Ingredients
40 ounces frozen strawberries
16 ounces fresh or frozen cranberries
4 cups sugar
2 pouches (3 oz each) liquid fruit pectin
Instructions
In a food processor, pulse the strawberries and cranberries - you can process them to a finely chopped texture for a completely smooth jam, or leave some fruit partially chopped for a chunkier jam. (Alternatively, you can use an immersion blender after the mix is melted in the pot before it gets hot.)
Pour the processed fruit into a large, heavy-bottomed pot. Add the sugar and over a medium-high heat, bring the fruit and sugar mixture to a full, rolling boil while stirring.
Boil for 1 minute.
Remove the pot from the heat and add the pectin, stirring to mix completely.
Bring back to a rolling boil and boil for 1 minute.
Allow jam to cool for 5 minutes, then skim off the foam from the top.
Ladle the hot jam mixture into sterile, half-pint jars, leaving ¼ inch headspace. Wipe jar rims clean, cover with hot lids and screw on the jar bands.
Bring a large pot of water to a boil, and carefully place the jars inside. Process in a boiling water canner or boil the jars for 10 minutes in the water bath.
Carefully remove the jars and set aside to cool. Jar lids will make a small popping sound when they have cooled, indicating a good seal.