Blackberry-Plum Jam

I went early to Rainbow to load up on more half-pint jars (back in stock!) as well as some other supplies. In the bulk foods aisle, I tried to find a larger plastic bag to contain all the white sugar I needed, impervious to the flyers posted around the store advertising a food lecture:

Kick the sugar habit!

Are you tired of the sugar rollercoaster?
Do you want to reclaim control of your diet?

No and no. I picked up some "Flavor King" red plums to compliment the blackberries, which macerated in 1/2 c of sugar for about two hours.

Blackberry-Plum Jam

1 quart blackberries, rinsed and picked over

4 red plums

2 lemons, squeezed

1/2 c plus 1 1/2 c white sugar

After joining the peeled, sliced plums in a pot with the berries and accumulated juice, mix in the additional sugar and lemon juice. Bring the fruits to a slow boil, scraping off foam that rises to the top. Boil until fruits release liquid, then boil down and pass the freezer plate test for desired consistency.