Orange Jam

Orange Jam turns sweet navel oranges into a bright, glossy spread with concentrated citrus flavor and a soft, spoonable set. Unlike traditional marmalade, there are no strips of peel, so the flavor stays fruity instead of noticeably bitter. Fresh lemon juice balances the sweetness, while a little finely grated zest brings back the fragrant orange oils lost during peeling. Best of all, the thin membranes naturally provide enough pectin to make this jam without a boxed thickener.

Everything cooks in one saucepan, and a simple chilled-plate test takes the guesswork out of knowing when it is ready. Once cooled, the jam becomes beautifully spreadable without turning stiff or gummy. Spoon it onto toast, biscuits, pancakes, yogurt, or warm scones. It also makes a lovely filling for cookies and cakes. Simple ingredients, pure orange flavor, and a jar that tends to find plenty of uses.

Recipe Yield: 48 servings (about 3 cups; 1 tbsp each)

INGREDIENTS

6 large navel oranges (about 3 lb; enough for 4 cups prepared fruit and juice)
2 1/2 cups granulated sugar
1/4 cup fresh lemon juice
2 tsp finely grated orange zest
1/8 tsp fine sea salt

INSTRUCTIONS

1. Prepare the oranges:
Place a small plate in the freezer to use later for testing the jam’s set. Wash and dry the oranges, then finely zest one, avoiding the white pith. Peel all oranges and remove the thick white pith, seeds, and tough center cores, leaving the thin segment membranes.

2. Make the orange pulp:
Coarsely chop the oranges, then pulse briefly in a food processor until juicy and finely broken down but not completely smooth. Measure exactly 4 cups of prepared fruit and juice.

3. Combine the jam:
Add the orange mixture, sugar, lemon juice, zest, and salt to a wide, heavy-bottomed saucepan. Stir over medium heat until the sugar dissolves.

4. Cook until thickened:
Bring to a steady boil, then cook over medium to medium-high heat for 20–30 minutes, stirring frequently and more often toward the end. The bubbles should become slower, thicker, and glossy.

5. Test the set:
Spoon 1 tsp jam onto the chilled plate and wait about 30 seconds. Drag the edge of a spoon through the jam; the path should remain visible and the jam should not quickly flow back together. If it does, cook for 2 minutes more and test again.

6. Cool and refrigerate:
Remove from the heat and rest for 5 minutes. Spoon into clean, heat-safe jars, cool briefly, then cover and refrigerate. Chill for at least 4 hours, preferably overnight, for the fullest set.

Helpful Tips to Perfect This Recipe

• Keep the thin orange membranes: They contain valuable natural pectin. Remove thick white pith and tough cores for clean flavor, while leaving the delicate membranes that surround the fruit.
• Measure 4 cups after preparing the oranges: Orange size and juiciness vary considerably. Measuring the prepared fruit instead of relying only on the number of oranges keeps the sugar-to-fruit ratio consistent.
• Let the chilled-plate test decide: Cooking time is only a guide because pan width and orange juiciness vary. Around 220°F at sea level is another useful indicator, although the plate test is especially helpful at higher elevations.
• Zest only the orange surface: Use finely grated bright-orange zest without any white pith underneath. This gives the jam a fuller orange aroma without introducing unnecessary bitterness.
• Store it as refrigerator jam: Keep Orange Jam refrigerated in a clean airtight jar for up to 3 weeks. For longer storage, freeze for up to 3 months, leaving room in the container for expansion. This recipe is not intended as a shelf-stable canning formula.