Combine all your ingredients in a medium saucepan. Heat on high until the mix begins to boil.

As soon as it starts to boil, set the heat to low and allow the mix to simmer for 1 hour and 20 minutes, stirring occasionally.

Turn off the heat and let the jam cool completely (about 30 minutes). You don't want to stir it while it cools, because this is when it's gelling.

Add to toast, ice cream, linzer cookies, or anything you think would be improved by a little blackberry jam goodness!