Rhubarb is a farm-stand favorite for me. I bring it home by the armload for jams and syrups. Tip: Seek out the ruby red stalks. This jam will taste fine if made with green stalks but won't be as pretty.
Preparation Time
20 mins
Cooking Time
40 mins
Total Time
60 mins
Calories
165 Calories
Recipe Instructions
Step 1
Submerge 6 empty half-pint jars on a rack in a large pot of water. Cover and bring to a rolling boil, then reduce heat to low to keep jars warm until ready to fill.
Step 2
Tumble rhubarb, orange segments, and orange zest into a wide, nonreactive 8-quart pot. Whisk together sugar, pectin, and cardamom in a small bowl, then stir into pot until combined.
Step 3
Bring to a vigorous boil over high heat. Reduce heat to medium-high; cook, stirring frequently and adjusting heat as needed to maintain a gentle boil, until volume has reduced by at least one-third, 20 to 25 minutes. Remove pot from heat and check for set.
Step 4
Working with one jar at a time, remove empty jars from canning pot. Using a wide-mouth funnel, carefully ladle jam into jars, leaving 1/2 inch for headspace. Use a clean wooden chopstick to work air bubbles out of jars. Check headspace again and add more jam if necessary to bring to 1/2 inch from the top.
Step 5
Wipe jar rims, apply lids and bands (not too tightly), and return jars to canning pot; cover pot and return water to a rolling boil. Process for 10 minutes. Turn off heat, remove pot lid, and let jars stand in the cooling water 5 minutes to help ensure a good vacuum seal.
Step 6
Move jars to a folded kitchen towel or wooden cutting board to cool completely before checking seals. Any unsealed jars should be refrigerated and eaten promptly. Store sealed jars in a cool, dark place. They are shelf-stable at least 1 year.
