Delicious homemade rhubarb jam is a perfect way to use up your spring rhubarb. This jam is so tasty on toast or a sandwich.
All you need to make this jam is fresh rhubarb and sugar and a bit of fresh squeezed lemon juice! That's it - no added pectin or other ingredients.
Rhubarb is tart and it lends itself to a variety of dishes. Rhubarb jam is a perfect jam with a bit of tart and a bit of sweet. This jam is delicious on toast, English muffins or on a peanut butter sandwich.
Rhubarb is in full season for us right now. I've been making lots of rhubarb recipes lately; rhubarb muffins, rhubarb bread, rhubarb crisp, rhubarb sauce and my latest is this rhubarb jam.
This jam is only made with fresh rhubarb and sugar and a bit of fresh lemon juice. That's it! There's no added pectin, water or other ingredients.
The trick to making this jam is macerating the rhubarb. Macerating is simply mixing the rhubarb with sugar and allowing the water to be extracted from the rhubarb.
To make the jam
- Cut up rhubarb into small pieces and place in a bowl
- Add sugar and stir
- Cover for at least 8 hours or overnight
- Add fresh squeezed lemon juice
- Place rhubarb and all juices into a large pot
- Cook over medium high heat until the mixture begins to boil
- Lower to medium low heat for about 20 minutes, stirring often
- Continue cooking over low heat until mixture begins to thicken
- Remove from heat and place in a glass container
Testing to see if the jam is done
There are a few different ways to determine if your jam is done:
- Cook until rhubarb is soft and most of the liquid has evaporated
- Cook until temperature of jam reaches 210-215 degrees. This is a slightly lower temperature than most jams that are cooked to 220 degrees, but it is a perfect temperature for rhubarb jam
- Test jam on a plate - scoop out a tablespoonful of jam onto a plate. Allow to cool for a minute and then run the back of a spoon through jam. If the jam stays separated, it is done.
- Tilt the jam - the jam should only have a slight slide
Recipe tips
- Allow enough time for the rhubarb to release all of its juices
- Use all of the juice along with the rhubarb for the jam
- Use a non reactive pot for cooking the jam. A stainless steel or ceramic coated pot will work well.
- Keep a close eye the jam while it cooks. Stir the jam often to avoid burning.
The color of rhubarb jam
The color of rhubarb jam varies, depending on your rhubarb. The rhubarb from my garden tends to be more green than red, but my mother in law's rhubarb is very, very red. When I use her rhubarb in this jam, my jam also turn out really red.
It can also a light color with a pinkish hue. Sometimes it even turns a drab greenish brown color. Adding a bit of fresh squeezed lemon juice helps keep the color bright.
No matter the color, the taste is always the same. The color of rhubarb does not change the taste. Adding a bit of freshly squeezed lemon juice helps preserve the color.
Recipe Faqs
This batch of jam does not make a large amount. It yields approximately two cups of cooked jam. Since this doesn't make a large amount, I store the jam in the refrigerator. It will last for up to one month in the refrigerator.
If you are making a larger batch and need a way to store it for a longer period, you can freeze the jam or can it into jars and process in a hot water bath.
The color of rhubarb varies from deep red to bright green. Some stalks are both red and green. The taste does not vary with the color.
The color of the rhubarb will affect the color of the jam, but the taste will remain the same.
More delicious homemade jam recipes
If you make this recipe, I’d love to hear about it! Leave a comment below and snap a picture and tag me on Instagram @beyondthechickencoop
Be certain to check out all my homemade jam recipes!
Rhubarb Jam
Ingredients
- 6 cups rhubarb (chopped)
- 2 cups sugar
- 1 Tablespoon lemon juice (fresh squeezed)
Instructions
- Place the rhubarb in a large glass bowl. Add sugar and stir to distribute. Cover and let sit for at least 8 hours stirring once or twice to redistribute sugar.6 cups rhubarb, 2 cups sugar
- The rhubarb will release a lot of liquid while sitting with sugar.
- Place rhubarb and its juice into a nonreactive pot.
- Add lemon juice.1 Tablespoon lemon juice
- Cook over medium high heat until mixture comes to a simmer, about 20 minutes. Stir often.
- Reduce heat to low and continue cooking for another 10 minutes. Stir often to avoid burning.
- Test jam on a plate. Place a small spoonful on a plate and let cool for one minute. Draw a line down the center with the back of a spoon. The mixture should remain separated. Tilt plate slightly - the mixture should only run a small amount.
- Remove jam from heat and allow it to cool for 10 minutes. Transfer jam to a glass canning jar or other storage container. Cover and refrigerate.
Notes
- Allow enough time for the rhubarb to release all of its juices
- Use all of the juice along with the rhubarb for the jam
- Use a non reactive pot for cooking the jam. A stainless steel or ceramic coated pot will work well.
- Keep a close eye the jam while it cooks. Stir the jam often to avoid burning.
Valerie says
mine turned green colour, but still a wonderful taste! I am use to the strawberry rhubarb jam my mother is making, and was a little skeptical about using rhubarb alone, but I was proved wrong:-) Now, I just need to make a good loaf of dried fruits and nuts bread to go with it!
Kathy says
Hi Valerie,
Rhubarb varies in color. Some is mostly green with a tinge of red and some is all red. My rhubarb at home produces a mostly green jam, while the rhubarb I get from my mother in law is a deep red color. Both taste the same. Glad you enjoy!
Thank,
Kathy 🙂
Meredith says
The best rhubarb jam recipe I've ever used! I make up a large batch and freeze most of it and take it out as I need it. I made enough to last probably for 8 months and after 3 months I'm having to remake it, that is how much my adult children love it! Might as well just put it on the table and stick a spoon in it! Thank you for the great recipe
Kathy says
I love it!!! It's the best compliment when whatever you make disappears so quickly and they keep coming back for more! Thanks for your lovely comment.
Kathy 🙂
Meredith says
Since rhubarb Is not in season in December I used frozen rhubarb that I had bought in the grocery store, which was hard enough to find, but I found it! I usually use fresh rhubarb but the Frozen turned out just as well as the fresh! Thank you again kathy, exceptional rhubarb recipe and the directions are spot on!
Rose Rockvoy says
I made this a triple batch for a guy that loves rhubarb jam but I added 1 pk strawberry jello to it for the red color since mine was brown/green color. Perfect product.
Kathy says
Thank you! 🙂