Carrot & Rhubarb Preserve

This three-ingredient preserve is the kind of clever pantry recipe European farmhouses have made for generations. Pureed carrot brings natural sweetness and that gorgeous orange backbone, while sliced rhubarb contributes the sharp acidity that defines great preserves and helps the jam set without added pectin.

Warming the sugar before adding it to the pot is one of those small tips that pays off big. Warm sugar dissolves almost instantly into the hot puree without grainy resistance, and it doesn’t cool the simmering vegetables enough to slow the reduction process.

The carrot’s natural pectin combined with the rhubarb’s stalk fiber gives this jam its body without needing any commercial pectin. It’s a slightly looser jam than a fruit preserve, more like a thick fruit butter, which is perfect for slathering on toast or stirring into yogurt.

The 20-minute simmer is the right window. Less and the jam won’t reduce enough to set. More and you risk caramelizing the sugar into something darker and less fresh-tasting. Watch for a slow boil with thick, lazy bubbles.

This is the kind of preserve that surprises everyone who tries it. “What’s in this?" gets asked a lot. Carrots and rhubarb is not the answer people expect.

Pro Tips

• Sterilize jars by running them through the dishwasher on the hottest cycle or boiling in water for 10 minutes
• Test the set on a chilled plate, the jam should mound and wrinkle when pushed with a finger
• Reserve some of the cooking liquid in case the preserve is too thick after the simmer, you can thin it back
• Use young, tender rhubarb stalks for the best color, older stalks turn brown and stringy

Variations

• Add a tablespoon of grated fresh ginger or a teaspoon of cardamom for a warm-spiced version
• Stir in a tablespoon of lemon juice and zest at the end for extra brightness
• Swap a portion of the carrot for cooked sweet potato or butternut squash for an autumn variation