I just peel them and put in water with fruit fresh to keep them from turning brown. Then I slice them into a colander to drain good. Put them in quart zipper freezer bags and you'll have enough for a pie. I don't put sugar on them until I'm ready to make the pie. We have scads of them this year. The first tree is done and the white ones will be the next to ripen. Then four or five more trees I will be working on until the last one ripens at the end of September. I'll put away a lotof them this year because it may be several years before we have them again. There aren't any wormy ones either.