Sterilize your jars in your preferred manner.
Put fruit, sugar, liquid and lemon juice in a 4-quart, non-reactive pot and bring to a boil. Reduce temperature and cook at a simmer for 10-15 minutes (you want it to look syrup-y and shiny). Bring back to a boil and add pectin. Stir to combine and let bubble for 2-3 minutes.
Remove marmalade from head and ladle into jars. Wipe the rims and threads of the jars with a cloth dipped into your sterilization water and apply lids and bands. Put into water bath and process for ten minutes.
(Adapted from Food In Jars)
Serving Size 1/2 pint
Servings 0