Recently I was gifted with a huge canner-full of "harvest" apples. I don't know what kind those are, but boy-howdy, they are tart!
You can see in the photo how they were not the prettiest apples in the world, and in truth, I did have to discard several whole fruits along with major pieces of many others. In the interest of "waste not", I did take the time to dig out bad spots and save as much as possible. I am, after all, Elsie's granddaughter. (I remember trying to toss out a very ripe strawberry once. Hoo! Never tried that again!)
Anyway, insects and spoilage aside, I got 8 1/2 cups of applesauce, to which was added about 1/4 cup of sugar to make it palatable. This will mostly be used to replace part of the oil in some baking recipe. (Note: Food mill = good investment)