Thistle Jelly

5 from 1 vote

A delicate floral jelly made from wild thistle blossoms. This sweet, honeyed preserve captures the surprising sweetness of edible thistle flowers in a shelf-stable spread.

Prep Time1 15

Cook Time15

Canning Time10

Total Time1 40

Course: Jelly

Cuisine: American

Keyword: Floral Jelly

Servings: servings, makes 5 to 6 half-pint jars

Equipment

Water Bath Canner
Canning Jars, Lids and Bands
Canning Funnel
Fine Mesh Strainer or Jelly Bag
Large saucepan

Ingredients

For the Thistle Tea

2 cups fresh thistle blossoms tightly packed
4 cups water

For the Jelly

4 cups thistle tea strained
1/4 cup bottled lemon juice or 1 tsp citric acid powder
1 box powdered pectin 1.75 oz, such as Sure-Jell original, or 6 Tbsp if bulk pectin
5 cups granulated sugar

Instructions

Bring the water to a boil. Remove from heat and let cool for 1-2 minutes. Add the thistle blossoms and push them down until fully submerged. Cover and steep for at least 1 hour or overnight in the refrigerator.
Strain the tea through a fine mesh strainer or jelly bag, pressing gently on the blossoms. Measure the strained tea, adding water if needed to reach the full amount called for in the ingredients.
Place the thistle tea in a large pot and add the lemon juice. Whisk in the powdered pectin until completely dissolved. Bring to a full rolling boil over high heat, stirring constantly.
Add all the sugar at once and continue stirring. Return to a full rolling boil and boil hard for exactly 1 minute. Remove from heat and skim off any foam.
Ladle hot jelly into prepared jars, leaving 1/4 inch headspace. Wipe rims clean, center lids, and apply bands fingertip-tight.
Process in a boiling water bath for 10 minutes, adjusting for altitude. Turn off heat and let jars rest 5 minutes before removing. Cool undisturbed for 12-24 hours before checking seals.

Notes

Thistle Varieties: All thistles in the Cirsium genus are edible, so Canada thistle, bull thistle, milk thistle, blessed thistle, and meadow thistle all work. Pick blossoms that are fresh and brightly colored, not faded or fluffing out into seed.

Harvest Safely: Gather only flowers you've correctly identified, from spots clear of pesticides, road spray, and pet traffic. Wear gloves and work with the soft petals rather than the spiny leaves and bracts, then rinse the blossoms to clear out any insects.

Use Bottled Lemon Juice: Stick with bottled lemon juice. Its acidity holds steady from bottle to bottle the way fresh lemons don't, and that acid is what keeps the jelly safe to can. Use the full amount and don't trim it back. Citric acid stands in at 1 teaspoon for the 1/4 cup of lemon juice.

Don't Double the Batch: A jelly batch sets on a fixed balance of liquid, sugar, and pectin, and scaling it up tends to leave you with syrup. Make back-to-back single batches rather than one oversized pot.

Give It Time to Set: Give the jars a full 24 to 48 hours before deciding anything is wrong. If it's still runny after that, hold off on re-cooking and look at the troubleshooting guide first.

Low Sugar Option: For a lighter jelly, use Sure-Jell Low Sugar or Pomona's Universal Pectin and follow the mint jelly directions on the package. With Pomona's, raise the lemon juice to 1/2 cup, since it's the one without added citric acid in the powder. Cutting the sugar will also cut the yield.

Make the Tea Ahead: You can steep the thistle tea and keep it in the fridge for a day or two before making the jelly, which helps if you'd rather not do the whole thing in one sitting.

Storage: Sealed, processed jars hold their quality on the shelf for 12 to 18 months. Skipping the canner? Keep the jelly in the fridge for about 3 weeks or freeze it for up to 6 months, and refrigerate once opened.

Altitude Adjustments: 0 to 6,000 feet: 10 minutes. Above 6,000 feet: 15 minutes.

Nutrition