01 -
Wash jars and lids in hot soapy water. Keep jars warm while you cook the jelly. If processing for shelf storage, prepare a boiling-water canner with a rack.
02 -
Peel and finely dice the peaches. Finely chop the bell pepper and jalapenos. Wear gloves when handling the jalapenos and remove ribs and seeds for milder jelly.
03 -
In a deep 6-quart pot, stir together peaches, bell pepper, jalapenos, apple cider vinegar, lemon juice, and powdered pectin. Bring to a full rolling boil over medium-high heat, stirring often.
04 -
Add all the sugar at once and stir until dissolved. Return to a full rolling boil that cannot be stirred down, then boil hard for 1 minute while stirring constantly.
05 -
Remove the pot from the heat. Skim off foam with a clean spoon. Ladle hot jelly into warm jars, leaving 1/4 inch headspace, and wipe rims clean.
06 -
Apply lids and cool at room temperature. Refrigerate for up to 3 weeks or freeze for up to 6 months. For shelf-stable storage, process in a boiling-water canner using current safe canning guidance for your jar size and altitude.