Do I need pectin for peach jam?
No. Peaches have some natural pectin, but they are not the highest-pectin fruit. This recipe sets mainly through reduction (cooking off water) plus the help of sugar and lemon juice. If you want a firmer, quicker set, you can add pectin, but this recipe is written to work without it.
How do I know when the jam is done without a thermometer?
Use the cold plate test: place a small plate in the freezer before you start. When you think the jam is ready, drop a teaspoon on the cold plate, wait 30 seconds, then drag your finger through it. If it wrinkles slightly and the line holds, you are there.
Can I leave the peach skins on?
You can. The skins soften during cooking and add a little color. If you want a smoother, more classic jam texture, peel them. My compromise move is to leave skins on and mash well, or blend briefly with an immersion blender at the end.
What is the easiest way to peel peaches?
Blanch them: cut a small X on the bottom of each peach, dunk in boiling water for 30 to 60 seconds, then transfer to an ice bath. The skins should slip right off.
My jam tastes a little flat. What should I do?
Add a pinch of salt and another small squeeze of lemon. Salt and acid are the two fastest ways to wake up fruit flavor.
Can I water-bath can this recipe?
This recipe is best for refrigerator or freezer jam. For shelf-stable canning, follow a tested canning recipe and processing times from a trusted source (like the National Center for Home Food Preservation) to ensure safe acidity and proper sealing.