Zucchini jam is a surprisingly delightful way to use up an abundant summer harvest. Its mild flavor and smooth texture absorb spices and citrus beautifully, making it a versatile spread. This small batch recipe is perfect for home canners who want to try zucchini jam without committing to a large quantity.
Ingredients
- 3 cups grated zucchini (about 2 medium zucchinis, peeled if desired)
- 2 cups granulated sugar
- 1/4 cup fresh lemon juice (about 1 large lemon)
- 1/2 teaspoon ground cinnamon
- 1/4 teaspoon ground nutmeg
- 1/4 teaspoon ground ginger (optional)
- 1/4 teaspoon salt
- 1 package (1.75 oz) powdered fruit pectin (such as Sure-Jell)
- 1/2 cup water
Instructions
- Prepare the zucchini: Wash zucchini thoroughly. Peel if the skin is thick or waxed. Grate the zucchini using a medium grater. Measure 3 cups of grated zucchini, then place it in a clean kitchen towel and squeeze gently to remove excess moisture. This helps the jam set properly.
- Cook the fruit mixture: In a large non-reactive saucepan, combine the grated zucchini, lemon juice, water, cinnamon, nutmeg, ginger (if using), and salt. Stir well.
- Add the pectin: Sprinkle the powdered pectin over the mixture and stir constantly. Bring to a full rolling boil over medium-high heat, stirring frequently to prevent scorching.
- Add sugar and boil: Once boiling, add the sugar all at once. Stir vigorously until the sugar dissolves. Return to a full rolling boil and boil exactly 1 minute, stirring constantly. Remove from heat immediately to prevent overcooking.
- Skim foam and jar: Use a metal spoon to skim off any foam on the surface. Ladle the hot jam into sterilized half-pint (8 oz) canning jars, leaving 1/4 inch headspace.
- Seal jars: Wipe rims with a clean, damp cloth. Place sterilized lids and screw bands on jars, tightening just until fingertip tight.
- Process jars: Process jars in a boiling water bath canner for 10 minutes, adjusting for altitude if necessary (add 1 minute per 1000 feet above 1000 ft). Ensure jars are covered by at least 1 inch of water.
- Cool and store: Remove jars carefully and place on a towel or rack to cool undisturbed for 12-24 hours. Check seals by pressing the center of each lid; it should not flex up and down. Store sealed jars in a cool, dark place.
Tips
- Zucchini selection: Choose fresh, firm zucchinis without blemishes or soft spots for best flavor and texture.
- Peeling: Peeling is optional; young zucchini skins are tender and add color, but older skins can be tougher and slightly bitter.
- Spice variations: Adjust spices to taste; cloves or cardamom can add interesting notes if you prefer.
- Preventing runny jam: Removing excess moisture from grated zucchini and boiling for the full minute after adding sugar ensures proper gel formation.
Serving Suggestions
Zucchini jam is delicious spread on toast, bagels, or English muffins for breakfast. It pairs well with cream cheese or ricotta for a quick snack or appetizer. Try it as a topping on vanilla ice cream or yogurt for a fruity twist. It can also be used as a glaze for roasted meats or stirred into oatmeal for added flavor.
Variations
To customize your zucchini jam, consider adding fresh ginger slices during cooking for a brighter, spicier note. Substitute lemon juice with lime juice for a slightly different citrus profile. For a berry twist, stir in 1/2 cup mashed fresh strawberries or blueberries after cooking but before canning (do not boil again). You can also experiment with different sweeteners like honey or maple syrup, but note that pectin may not gel as firmly with these substitutions.
Storage and Reheating
Properly canned zucchini jam can be stored unopened for up to 12 months in a cool, dark pantry. Once opened, refrigerate and use within 3 weeks for best flavor and safety. If you prefer a warm spread, gently reheat jam in a small saucepan over low heat, stirring occasionally. Avoid boiling after opening to preserve texture and taste.
Frequently Asked Questions
Can I use a water bath canner for zucchini jam?
Yes. Because zucchini jam is made with added acid (lemon juice) and sugar, it is safe to process in a boiling water bath canner. Follow USDA guidelines for processing times and ensure your pH is below 4.6 by using the recommended lemon juice amount.
Do I have to peel the zucchini?
No, peeling is optional. Younger zucchinis have tender skins that add color and nutrients. However, if the skin is thick or waxed, peeling can improve the jam’s texture and flavor.
Why is pectin necessary?
Pectin is a natural gelling agent that helps jam set properly. Zucchini is low in natural pectin, so adding powdered fruit pectin ensures your jam thickens and holds its shape after cooling.
My jam turned out too runny. What went wrong?
Common causes include not boiling the mixture long enough after adding sugar, not removing enough moisture from the grated zucchini, or using less pectin than called for. Make sure to follow the full boil time and squeeze excess water from the zucchini before cooking.
Can I freeze zucchini jam instead of canning?
Yes, zucchini jam freezes well. Use freezer-safe containers, leaving headspace for expansion. Thaw in the refrigerator and stir before serving. Freezing preserves flavor without the need for processing but does not allow for shelf storage like canning.
How do I know if my jars sealed correctly?
After cooling, press the center of each lid. A properly sealed jar will have a concave lid that doesn’t flex up or down. If the lid pops or moves, refrigerate and use the jam within 3 weeks.
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