A few secret ingredients take this basic, pectin-free homemade strawberry jam from great to fabulous. It really is the best strawberry jam!

Three jars of the best strawberry jam

Some summers I go all-in on canning. And others, life just gets too busy. But I always make time for homemade jam!

Even if canning isn’t your thing, you should definitely be making your own jam. Homemade strawberry jam is easy to make at home and so much better than store-bought. My recipe is tried and true, with a few simple secret ingredients (that you already have in your pantry).

Why this is the best strawberry jam

This homemade strawberry jam has the best natural strawberry flavor because it’s cooked for longer and doesn’t use any commercial pectin. Adding vanilla and a splash of balsamic vinegar brings unexpected depth and complexity, elevating it even more.

This IS the best strawberry jam recipe!! I’ve been making this recipe for the last 5 years or so and it never disappoints!! Once, most of my fresh strawberries were over ripe so I added fresh blueberries in a pinch to make up the difference in weight and WOW it turned out amazing!⭐⭐⭐⭐⭐” —from reader Val

Washed and sliced strawberries for the best strawberry jam

Ingredients you’ll need

  • Fresh strawberries: This recipe is perfect for strawberry season! 
  • Bottled lemon juice: Ensures consistent acidity for safe canning. (If you aren’t canning it, you can use fresh lemon juice.)
  • Granulated sugar: Draws out natural pectin in the berries, adds sweetness, and works as a preservative.
  • Balsamic vinegar: Don’t skip it!
  • Vanilla bean or vanilla extract: Vanilla makes everything better, so why not jam too?

Why this jam recipe doesn’t use pectin

Pectin is used to quickly thicken and set jams and jellies, but it’s actually naturally occurring in fruit. A longer cook time draws out the natural fruit pectin, and also allows excess moisture to evaporate. This results in a thicker, more concentrated jam than one with added pectin.

Stirring the best strawberry jam in a pot

How to make homemade strawberry jam

  1. Clean, hull (remove the stem), and slice the strawberries.
  2. Combine strawberries, lemon juice, sugar, balsamic vinegar, and vanilla in a large pot.
  3. Bring the mixture to a gentle boil over medium-high heat, stirring frequently.
  4. Reduce heat to a simmer and cook until the jam thickens, stirring occasionally.
  5. Store in the fridge, freezer, or process in sterilized jars for shelf storage. Or enjoy right away!

How to know if homemade jam is done

Since this recipe doesn’t use pectin, we’re relying on time to thicken the jam naturally. But how do you know when it’s set and done? Here are a few simple ways to test your jam:

  • Spoon test: Scoop jam and pour it back into the pot. If it drips slowly and clings to the spoon, it’s ready.
  • Plate test: Chill a plate, add a spoonful of jam on it. After 1 minute, run your finger through. If the jam holds the path, it’s set.
The canning process of the best strawberry jam

How to store homemade strawberry jam

  1. In the fridge: Keep in an airtight container for 1-2 months.
  2. In the freezer: Use a sturdy, airtight container or heavy freezer bag and store up to 6 months.
  3. In your pantry: Process and can jars properly, then store in a cool, dark place for 1–2 years. New to canning? Check out my canning tips and resources page.

Jam FAQs

Can I reduce the sugar or use a sugar alternative?

For safe, long-term storage, it’s best not to modify this recipe. If you plan to use the jam quickly or store it in the fridge or freezer, you can reduce the sugar, but keep in mind I don’t have tested guidelines for adjustments.  

Can I use this recipe with other fruits or berries?

You can use this same recipe with other berries like raspberries, blackberries or blueberries. If canning for shelf storage, increase sugar to 2 1/2 cups.

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4.29 from 7 reviews

The Best Homemade Strawberry Jam

Servings: 3 cups
Prep Time: 15 minutes
Cook Time: 1 hour
Total Time: 1 hour 15 minutes
A few secret ingredients really help to make this easy, pectin-free strawberry jam recipe shine.

Ingredients
 

  • 2 pounds (900 grams) strawberries , hulled and sliced
  • ¼ cup (56 grams) lemon juice (see Note)
  • 2 cups (400 grams) granulated sugar
  • 2-3 teaspoons balsamic vinegar , to taste
  • 1 vanilla bean , split lengthwise or 1 tablespoon vanilla extract

Instructions
 

To make the jam:

  • Combine all ingredients in a large saucepan. Bring the mixture to a boil over medium high heat, stirring frequently.
  • Reduce heat and simmer, stirring occasionally. Periodically skim foam off of the top.
  • After about 45-60 minutes, jam should be thick and drop from a spoon in thick drips. (Cook longer if needed, exact cook time will depend on the strawberries and stovetop temperature.)
  • Remove vanilla bean pod if you added one, and spoon into desired storage container(s).
  • To store in the fridge: Store in an airtight container for up to 1-2 months.
  • To store in the freezer: Store in a sturdy airtight container or heavy ziplock bag for up to 6 months. Once jam is opened, it should be kept in the fridge.

To process in a home-canner:

  • If canning, fill sterilized jars leaving ¼ inch headspace. Wipe the rims of the jars clean and cover with sterilized lids and rings. Process in a pot of boiling water for 10 minutes. Make sure the water covers the jars completely, and that it is boiling for the entire processing time.
  • Let cool to room temperature before removing rings and storing. Canned jam will store for 1-2 years in a cool, dry place away from direct sunlight. Once jam is opened, it should be kept in the fridge.

Notes

  • Bottled lemon juice vs. fresh lemon juice: If you are planning to process and can this jam, bottled is the best option as it has a consistent level of acidity which is needed to preserve the jam. If you are freezing or storing the jam in the refrigerator, you can use freshly squeezed lemon juice if you prefer.
  • Recipe makes approximately 6 half-pint jars of jam. Your yield may be different depending on how long you cook the jam.
  • Watch for signs of spoilage: Discard jam that shows any mold, fermentation or bubbling.
Calories: 312kcal, Carbohydrates: 79g, Protein: 1g, Fat: 1g, Saturated Fat: 1g, Sodium: 3mg, Potassium: 242mg, Fiber: 3g, Sugar: 74g, Vitamin A: 18IU, Vitamin C: 93mg, Calcium: 24mg, Iron: 1mg
Cuisine: American
Course: Dessert, Snack
Author: Annalise Sandberg
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Have you tried this recipe?I’d love to hear about it! Leave a rating and review below, or take a photo and tag it on Instagram @completelydelicious with #completelydelicious.

This recipe was originally published June 2012. Photos and recipe have been updated.