Take advantage of the season's abundance of clementines and make this delicious homemade orange marmalade. Easy to make in the instant pot, and perfect to give as a gift (or to keep for yourself!), this orange and lemon marmalade will add a bit of sunshine to your cold winter mornings!
Using a mandolin, slice oranges very thin. Discard ends and any pieces that are mostly peel or pith. If you’re using seeded oranges, remove the seeds.
Add the fruit and water to the Instant Pot. Select the manual setting and cook on high pressure for 14 minutes. Allow a natural release. (Let the pressure come down on its own, about 10-15 mintues. Don't use the manual release button.)
Add the pectin packet and the sugar to a small bowl and stir until well combined. Turn on the saute' funcition and add the sugar-pectin mixture to the po Stir constantly until the sugar fully dissolves.t.
Bring to a full rolling boil — a boil that can't be stirred down — and boil for about 5 minutes, stirring often. Citrus peel is naturally rich in pectin, so this can set quickly; start checking early.
To test if it's set, use the cold-plate method: before you start, put a small plate in the freezer. Drop a spoonful of marmalade onto the chilled plate, wait a few seconds, then nudge it with your finger. If it wrinkles and holds its shape, it's done. If it's still runny, boil another minute or two and test again.
Pour marmalade into jars and allow to cool completely.
Store in the refrigerator for up to 3 weeks. (Or, if you’re into canning, an it and store marmalade for up to 1 year!)
Notes
Because citrus already contains a lot of pectin naturally, you shouldn't need much boil time after the packet of pectin and sugar are added.