01 -
Blanch peaches in boiling water for 1 minute, transfer to an ice bath, and peel. Pit, then finely chop the peaches. Wash jalapeño peppers, remove seeds for a milder flavor, and finely chop.
02 -
Place chopped peaches, jalapeños, lemon zest, and lemon juice in a large saucepan. Stir together over medium-high heat and bring to a gentle boil.
03 -
When mixture reaches a full boil, add granulated sugar. Stir continuously until sugar dissolves. Maintain a rolling boil, cooking for 15–20 minutes until the mixture thickens to a jam-like consistency.
04 -
Dip a metal spoon into the mixture. If the jam coats the back of the spoon and drips slowly, it is ready.
05 -
Wash canning jars with hot soapy water and dry. Transfer hot jam into jars, leaving 0.5 cm headspace. Wipe rims, secure lids, and let cool to room temperature.