-
Wash rhubarb and chop into small pieces.
-
Place rhubarb and water in a large saucepan or stockpot.
-
Bring to a simmer over medium heat.
-
Cook for 10 to 15 minutes, until rhubarb is soft.
-
Mash gently with a potato masher to release juice.
-
Pour mixture through a jelly bag or fine mesh strainer lined with cheesecloth.
-
Let drain for 2 hours or overnight.
-
Do not squeeze the pulp if you want clear jelly.
-
Measure 6 cups strained juice. Add water if needed.
-
Pour juice into a clean large pot.
-
Stir in powdered pectin.
-
Bring to a full rolling boil over high heat.
-
Add sugar all at once and stir until dissolved.
-
Return to a hard rolling boil and boil for 1 minute.
-
Remove from heat and skim foam if needed.
-
Ladle hot jelly into hot prepared jars.
-
Leave 1/4 inch headspace.
-
Wipe rims clean.
-
Apply lids and rings finger tight.
-
Process in boiling water bath for 10 minutes.
-
Remove jars and cool undisturbed for 12 hours.
-
Check seals before storing.