Adapted from a recipe in "Food in Jars". Pretty simple and easily increased. Adjust the sugar to your own taste. I added 1/2 tsp. cinnamon to my first batch, based upon my husband's request, but other spices would do well, too. Be sure not to add them until after the peaches have reduced by cooking, the mixture shrinks quite a bit. Ten large peaches (weighing exactly four pounds) yielded 5 half-pints of butter. Next time UI plan to puree the roasted peaches, I prefer a smooth product and it turned out chunkier than I would prefer.