I am happy to be a "canbassador" for SweetPreservation.com, a community site of the Northwest cherry growers and soft fruit growers of Washington state. They sent me a big box of juicy, sweet, ripe Country Sweet peaches which I agreed to preserve, of course. A post from Dorie Greenspan on Facebook about ginger, peach vanilla jam inspired me to create preserves with the same flavor combination.
The difference between preserves and jam is sugar. Jam uses a lot of it and preserves use less. I like the flexibility of preserves. You can use preserves in place of jam but you can also use preserves in recipes or as a dessert topping. It's particularly good mixed with plain yogurt. The ginger and vanilla complement the tangy sweet flavor of peaches. I used a combination of fresh ginger and candied ginger, something I found in a ginger peach jam recipe. The ginger is very subtle, you just get a hint of it towards the end of each bite.