Not as mild as peaches - just a little more tart. When done, its a pretty rosey color. No pectin needed, so its lower in sugar. Natural pectin is in the nectarine peel... so do not peel them. If you must peel them - you will have to add pectin to the recipe (and more sugar).
This simple 3-ingredient jam recipe works with any kind of fresh or frozen stone fruit, like peach, nectarine, plum, apricot, and cherry. Freeze or can it. Printable labels are provided to turn jam jars into awesome gifts. From TheYummyLife.com