Instructions for how to fix freezer jam that didn’t thicken using liquid fruit pectin.

looking into a strawberry jam jar from above with the text how to fix freezer jam that didn't set

Sometimes homemade freezer jam can be too runny. If your homemade jam turned out more like syrup rather than jam, then follow these instructions for how to fix freezer jam that didn’t set.

mason jar of homemade strawberry jam

What is the difference between jam and jelly?

Jellies are made from the fruit juice squeezed from the fruit. Jams are made from crushed or cut-up fruit.

Jams are thick but not firm like jellies.

I love the small chunks of fruit in homemade freezer jam.

strawberry jam spread on wheat toast

Remaking runny freezer jam can seem like a pain, but it it worth the results. You have probably have already invested a good amount of money into fresh ingredients.

We prefer using Certo Liquid Fruit Pectin when fixing runny freezer jam.

Three Steps on How to Fix Freezer Jam

  1. Sanitize containers
  2. Set aside a trial batch
  3. Prepare the remainder of batch

strawberry jam in a tulip glass jr and a small white spoon with a help quote bubble

Looking for a Freezer Jam Recipe?

This is the recipe for our favorite Strawberry Freezer Jam.

Freezer Jam is a perfect recipe for beginners because the fruit doesn’t need to be cooked and you can prepare a whole batch in 30 minutes or less.

mason jar of homemade strawberry jam

How to Fix Freezer Jam

How to fix freezer jam that didn't thicken using liquid fruit pectin. Don't toss it- your jam can be saved!

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  • 1 cup jam that didn't set
  • 3 Tablespoons sugar
  • 1 1/2 teaspoons lemon juice
  • 1 1/2 teaspoons Certo Liquid Fruit Pectin


  • PREPARE containers: Rinse clean containers and lids with boiling water; dry thoroughly.
  • PREPARE A TRIAL BATCH: Measure 1 cup of jam into small bowl. Add sugar and lemon juice. Stir 3 minutes until sugar is completely dissolved. Add liquid pectin. Stir an additional 3 minutes. Pour into one of the prepared containers. Cover and let stand 24 hours before checking to see if set. Store opened pouch of pectin in refrigerator.
  • PREPARE REMAINDER OF BATCH: If the trial batch sets correctly, prepare remaining jam. DO NOT remake more than 8 cups of jam at one time. Use the same directions and measurements as for trial batch per 1 cup of remaining jam. Pour into prepared containers. Cover and let stand 24 hours before freezing.


These instructions are for Certo Liquid Fruit Pectin. 
Helpful conversions:
  • 3 teaspoons = 1 Tablespoon
  • 8 Tablespoons = 1/2 cup
  • 16 Tablespoons = 1 cup 
Freezer jam will not be as firm like store bought jelly. If your jam is still too thin you can swirl it into homemade ice cream, use as a topping, or spoon over pancakes and waffles. 
Did you make this recipe?Tag @katrinaskitchen on Instagram with the hashtag #katrinaskitchenrecipes

How to Use Strawberry Freezer Jam

We also like to use this jam in our No Churn Cheesecake Ice Cream.

You can even use a few tablespoons of jam to make strawberry milk. We use strawberry milk in lots of recipes like Strawberry Milk Bubble Tea and Milk and Cereal Breakfast Popsicles.

Warm up with this Strawberry White Hot Chocolate with Homemade Whipped Cream.