What a mess! I would strongly suggest that the plums be peeled and pitted, and the apples be cored, peeled and sliced in thin slices. Following this recipe, we ended up with a lot of plum stained water and flavorless fruit.
awesome! Great recipe! I've never made jam before and this worked out wonderful. Didn't have a food mill so had to improvise, a little messy but the taste is yummy. Didn't have granny smiths so used honeycrisp, also used a cinnamon stick instead of powder. Pros: easy for a first timer Cons: didn't have a food mill, but used a mesh strainer