Makes about 8 (8 oz) half pints
You will need:
2 1/4 lbs oranges (unpeeled), seeded and thinly sliced
Grated zest and juice of 1 lemon
6 cups water
3 dried habenero chili peppers
9 cups granulated sugar
8 (8 oz) half pint glass preserving jars with lids and bands
1.) COMBINE oranges, lemon zest and juice and water in a large, deep stainless steel saucepan, Bring to a boil over high heat, stirring constantly. Reduce heat and boil gently, stirring occasionally, for 40 minutes. Add chili peppers, partially cover and boil gently, stirring occasionally, until fruit is very soft, about 30 minutes. Remove and discard chili peppers.
2.) PREPARE boiling water canner. Heat jars and lids in simmering water until ready for use. Do not boil. Set bands aside.
3.) BRING mixture to a boil over medium-high heat, stirring constantly. Maintaining boil, gradually stir in sugar. Boil hard, stirring occasionally, until mixture reaches gel stage, about 15 minutes. Remove from heat and test gel. If gel stage has been reached, skim off foam.
4.) LADLE hot marmalade into hot jars leaving 1/4 inch headspace. Wipe rim. Center lid on jar. Apply band and adjust until fit is fingertip tight.
5.) PROCESS filled jars in a boiling water canner for 10 minutes, adjusting for altitude. Remove jars and cool. Check lids for seal after 24 hours. Lid should not flex up and down when center is pressed.