Tangerine Vanilla Marmalade with Overnight Soak
A glossy, bittersweet preserve built on slow-cooked tangerine peels and lemon, deepened with vanilla bean and natural pectin from seeds and membranes. The overnight soak softens the fruit and develops complexity, creating a sophisticated spread for toast, yogurt, or glazing duck. This method yields a set marmalade with tender peel strips suspended in jewel-toned gel. The vanilla adds warmth without dominating the bright citrus character, making it ideal for winter entertaining or gift-giving.
Ingredients
- 2 ¼ pound tangerines, whole, about 6satsumas or clementines1:1vegetarian
slightly sweeter result
- 1 whole lemon, whole
- 1 whole vanilla bean, split lengthwise and halvedvanilla extract, 1 teaspoon added at end instead of during cook1:~200vegetarian
adds minimal cooking time
Full guide → - 6 ¼ cup granulated sugar
Instructions
- 1
Place tangerines and lemon in a large heavy-bottomed saucepan with cold water to cover. Bring to a boil, then reduce heat and simmer over medium-low heat for 45 minutes until peels are tender when pierced.
- 2
Lift out fruit, reserving cooking water. Quarter fruit and reserve seeds. Peel away cooked fruit skins and slice finely. Remove membranes separating sections by hand.
- 3
Wrap seeds and membranes in doubled cheesecloth, gather corners, and tie shut with kitchen string.
- 4
Place cheesecloth bag, peels, and pulp in a large bowl. Scrape vanilla seeds into bowl, add vanilla pod, pour in reserved cooking water, cover, and let stand overnight.
- 5
Transfer mixture to a medium heavy-bottomed saucepan and bring to a boil. Add sugar gradually while stirring with a wooden spoon until dissolved.
- 6
Reduce heat to medium and simmer, stirring frequently, until a candy thermometer registers 220F and mixture wrinkles when tested on a cold plate.
- 7
Remove and discard cheesecloth bag. Skim off scum. Let stand in saucepan for 5 minutes.
- 8
Ladle into hot sterilized canning jars, leaving 1/4 inch headspace. Seal jars.
- 9
Process jars in a hot water bath for 5 minutes. Cool completely, then label and store in a cool dark place.
Tips
Test set by placing a small spoonful on a cold plate; if it wrinkles when pushed, marmalade has reached proper gel point.
Overnight soaking is key to tender peels and deep flavor; if skipped, extend simmering to about 1 hour after adding sugar.
Sterilize jars by running through a hot dishwasher or boiling them for 10 minutes before use to ensure proper seal.
Good to Know
Store in a cool, dark place. Once opened, refrigerate and use within 3 months. Unopened jars keep for 1 year.
Prepare fully up to 1 year ahead if properly canned and stored in cool darkness. Make in batches and freeze-store extra jars.
Serve on buttered toast, with fresh cheese, alongside roasted meats, or swirled into yogurt. Works as a glaze for duck or ham.
Common Mistakes
Do not skip the overnight soak to avoid undercook peels and flat flavor.
Do not rush the sugar dissolution to avoid crystallization later.
Do not cook beyond 220F to avoid rubbery marmalade texture.
Substitutions
adds minimal cooking time
Full guide →slightly sweeter result
less bright, more bitter
FAQ
Can I use regular extract instead of a vanilla bean?
Yes, use 1 teaspoon vanilla extract added just before ladling into jars. You will lose the infused depth from overnight soaking, but result is acceptable.
What if my marmalade doesn't set after reaching 220F?
Cool slightly, then reheat. If it still doesn't wrinkle on a cold plate, add 1 tablespoon lemon juice per batch and cook another 5 minutes.
How long can I keep opened jars in the fridge?
Use within 3 months of opening. Seal with a clean lid or transfer to an airtight container. Watch for mold at edges.