Spiced Rhubarb Jam Recipe
Introduction
Spiced Rhubarb Jam offers a delightful balance of tart rhubarb and warm spices, perfect for spreading on toast or adding to desserts. This homemade jam captures the fresh flavors of spring with a comforting twist that’s easy to make and store.

Ingredients
- 2 ½ lbs diced rhubarb
- 2 ½ lbs granulated sugar
- 2 tbsp lemon juice
- 1 tbsp finely grated ginger
- 1 cinnamon stick
- 2 star anise
- 1 tsp butter (optional)
Instructions
- Step 1: Wash and trim the rhubarb. Dice it and transfer to a large bowl. Add the sugar and stir well. Cover and let sit for at least 4 hours at room temperature or up to overnight in the fridge, stirring occasionally to help dissolve the sugar.
- Step 2: Preheat the oven to 250°F. Clean your jars thoroughly and place them on a baking sheet in the oven for at least 15 minutes to sterilize. Heat the canning lids in a small saucepan of barely simmering water. Prepare clean tongs, a ladle, a funnel, a damp cloth, and a potholder for later use.
- Step 3: Tie the star anise in a small piece of cheesecloth. Transfer the rhubarb mixture and its juices to a large pot. Add lemon juice, grated ginger, cinnamon stick, and the star anise bundle.
- Step 4: Bring the mixture to a boil over medium-high heat, stirring constantly. Optionally add the butter to reduce foaming. Keep boiling, adjusting heat to prevent overflow, and skim off any foam as it appears.
- Step 5: Continue boiling until the jam reaches 218°F, about 15 to 20 minutes. Immediately remove the pot from heat and place on a potholder.
- Step 6: Using tongs, remove a hot jar from the oven. Ladle the jam into the jar using a funnel, leaving ½ inch headspace. Wipe the rim clean with the damp cloth.
- Step 7: Remove a lid from the hot water with tongs, dry it, place it on the jar, and screw on the band tightly using a towel to hold the jar. Do not press down on the lid’s center. Repeat with remaining jars.
- Step 8: After 1–2 hours, check seals. Properly sealed jars will pop and have an indented lid top. Refrigerate any unsealed jars and use within weeks. Label sealed jars and store in a cool pantry for up to a year.
- Step 9: Before using, check seals again and inspect for mold or spoilage. Discard if any signs appear. Enjoy your spiced rhubarb jam!
Tips & Variations
- To add extra warmth, try including a few cloves or a small piece of vanilla bean with the spices.
- If you prefer a smoother texture, gently mash the rhubarb before cooking or blend slightly after it cools.
- Use organic rhubarb when possible for the freshest flavor and fewer pesticides.
Storage
Store sealed jars in a cool, dark pantry for up to one year. Once opened or if unsealed, keep the jam refrigerated and use within a few weeks. To reheat, gently warm the jam on the stove or microwave, stirring occasionally for an even consistency.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
What if my jam doesn’t set properly?
If the jam is too runny, you can return it to the pot and boil it a little longer to concentrate and thicken it. Be sure to stir frequently to prevent burning.
Can I omit the spices if I want a plain rhubarb jam?
Yes, you can omit the cinnamon, star anise, and ginger for a simple rhubarb jam with just fruit, sugar, and lemon juice. The spices add complexity but aren’t necessary for successful jam.
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Spiced Rhubarb Jam Recipe
- Total Time: 4 hours 30 minutes to overnight plus 20 minutes cooking
- Yield: Approximately 6 to 7 half-pint (250 ml) jars 1x
- Diet: Vegetarian
Description
This Spiced Rhubarb Jam combines tart rhubarb with warming spices like cinnamon, star anise, and ginger, perfectly balancing sweetness and spice. Slow-cooked to a thick consistency and canned for long-term storage, this homemade jam is ideal for spreading on toast, dolloping on yogurt, or gifting to friends.
Ingredients
Main Ingredients
- 2 ½ lbs diced rhubarb
- 2 ½ lbs granulated sugar
- 2 tbsp lemon juice
- 1 tbsp finely grated ginger
Spices & Other
- 1 cinnamon stick
- 2 star anise
- 1 tsp butter, optional
Instructions
- Prepare Rhubarb: Wash and trim the rhubarb, then dice it into pieces. Transfer the diced rhubarb to a large bowl, add the sugar, and stir together thoroughly. Cover and let the mixture sit for at least 4 hours at room temperature or up to overnight in the refrigerator, stirring occasionally to help dissolve the sugar.
- Sterilize Jars and Lids: Preheat the oven to 250°F (120°C). Place clean canning jars on a baking sheet and warm them in the oven for at least 15 minutes. Meanwhile, place the canning lids in a small saucepan with water and heat gently over low heat to keep them warm and sterilized. Prepare clean tools including tongs, a ladle, a funnel, a damp cloth, and potholders.
- Prepare Spices: Tie the two star anise pods in a small piece of cheesecloth to contain them during cooking.
- Cook the Jam: Transfer the rhubarb and its juice into a large pot. Add lemon juice, grated ginger, cinnamon stick, and the cheesecloth bundle with star anise. Bring the mixture to a boil over medium-high heat while stirring constantly. Optionally incorporate 1 tsp of butter to reduce foaming. Maintain a controlled boil, skim off foam as needed, and prevent boiling over by adjusting heat.
- Boil to Set Temperature: Continue boiling until the jam reaches 218°F (103.3°C), which usually takes about 15 to 20 minutes. This temperature will ensure the jam thickens and preserves correctly.
- Fill Hot Jars: Once the jam reaches the proper temperature, remove the pot from heat and place it on a potholder to cool slightly. Use tongs to take a hot jar from the oven and, with a ladle and funnel, fill it with hot jam, leaving about ½ inch of headspace at the top.
- Seal Jars: Wipe the rim of the jar clean with a damp cloth to remove any sticky residue. Remove a warm canning lid from the hot water with tongs, dry it, and place it on the jar. Screw on the band tightly but do not overtighten. Repeat the filling and sealing process with all jars.
- Check Seal: After about one to two hours, check if jars have sealed properly. A sealed jar will have a concave lid and often make a popping sound. Unsealed jars should be refrigerated and used within a few weeks, while sealed jars can be stored in a pantry for up to a year.
- Storage and Use: Label your jars and store them in a cool, dark place. Before use, inspect the seal and check for any signs of spoilage such as mold or off smells, discarding if found. Enjoy your homemade spiced rhubarb jam on toast, in desserts, or as a flavorful condiment.
Notes
- Adding butter helps reduce foam during cooking, making skimming easier but is optional.
- Maintaining jars and lids hot before filling prevents temperature shock and promotes proper sealing.
- If jars don’t seal properly, store them in the fridge and consume within a few weeks.
- Star anise and cinnamon add a warm, spicy depth to the jam, but can be adjusted or omitted to taste.
- Use sterilized equipment to prevent contamination and ensure long shelf life.
- Prep Time: 10 minutes plus 4 hours to overnight soaking
- Cook Time: 20 minutes
- Category: Jam
- Method: Stovetop
- Cuisine: American
Keywords: rhubarb jam, spiced jam, homemade jam, cinnamon jam, star anise jam, ginger jam, canning jam, fruit preserves

