01 - Wash oranges and lemon thoroughly. Using a fine grater or zester, remove zest from 2 oranges, avoiding the bitter white pith.
02 - Juice all oranges and the lemon, strain to remove seeds and pulp, yielding approximately 2 cups of juice.
03 - In a large saucepan, mix orange juice, lemon juice, orange zest, and water.
04 - Sprinkle fruit pectin evenly over the juice mixture and stir to combine thoroughly.
05 - Heat mixture over medium heat to a gentle boil while stirring constantly.
06 - Add granulated sugar all at once and stir until fully dissolved.
07 - Increase heat and bring to a full rolling boil. Boil hard for 1 to 2 minutes, stirring continuously.
08 - Remove saucepan from heat and skim off any foam from the surface with a clean spoon.
09 - Pour hot jelly into sterilized jars, leaving a 1/4 inch headspace. Seal immediately.
10 - Process jars in a boiling water bath for 10 minutes for long-term preservation. Allow to cool undisturbed.