For canning peaches, this is what I used last year with our Palisade peaches and it worked really well:
Choose ripe peaches, the skins come off better than unripe (impossible) or over-ripe (smushy, not as pretty).
Use wide-mouth quart jars.
20lb of peaches should make about 10 jars.
Use about 2.5 cups of water per jar. Mix in [...]
