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Kumquat jam inside of a glass jar with a spoon.
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5 from 2 votes

Kumquat Jam

Homemade Kumquat Jam is sweet, tangy, and bursting with citrus flavor. Spread it on English muffins, mix it into yogurt, or add it to a cheese platter for the ultimate flavor combo. Who's ready to make a batch?
Prep Time30 minutes
Cook Time30 minutes
Macerating Time1 day
Total Time1 day 1 hour
Course: condiment
Cuisine: American
Servings: 3 cups
Calories: 658kcal

Ingredients

  • 4 cups prepared kumquats 8 cups of whole kumquats
  • 2 cups granulated sugar
  • 2 cups water
  • 1 lemon zested and juiced
  • 1 orange zested and juiced
  • 1 cinnamon stick
  • 1 vanilla bean

Instructions

  • Rinse the kumquats under cool water, quarter them lengthwise, remove the seeds with a knife or your fingers, then chop them to your desired size for jam.
  • Combine chopped kumquats, vanilla bean, cinnamon stick, sugar, citrus zest, and water in a Dutch oven, cover, and refrigerate for 24 hours to macerate.
  • Bring the mixture to a simmer over medium-high heat, then reduce to medium and cook, stirring, until thickened or until it reaches 215°F/101°C on a candy thermometer.
  • Freeze a spoonful of jam on a plate for 5 minutes, then run your finger through it and if it holds its shape and doesn’t flow back together, it’s ready.
  • Spoon the hot kumquat jam into clean mason jars, let it cool to room temperature, then seal with a lid and refrigerate.

Notes

  • If you increase the volume to make a large batch of jam, you'll need to increase the cooking time so the jam will gel properly. 
  • This recipe requires 8 cups (2 quarts) of whole kumquats, which will yield 4 cups once quartered, seeded, and chopped.

Nutrition

Calories: 658kcal | Carbohydrates: 167g | Protein: 4g | Fat: 2g | Saturated Fat: 0.2g | Polyunsaturated Fat: 0.3g | Monounsaturated Fat: 0.3g | Sodium: 25mg | Potassium: 417mg | Fiber: 12g | Sugar: 152g | Vitamin A: 547IU | Vitamin C: 108mg | Calcium: 138mg | Iron: 2mg