In a large bowl, slowly pour in heavy cream while mixer is running. This will slowly begin to thicken. As it does, add your jam one spoonful at a time and continue to mix, adding a dash of salt (to taste). The cream will begin to solidify leaving a watery substance. When this occurs transfer butter into a cheese cloth and shape as a large softball.

Allow to sit for a few hours, or overnight, on top of a measuring cup or such, so that the butter milk drips into the container leaving the butter in the cheese cloth. Chill and serve. You may scoop individual servings by using a melon scoop. The butter milk may be used for other cooking purposes or add it to your flower bed for some beautiful blooms!