How to Make Freezer Jam in Canada (No Canning Required)

The easiest way to put June’s strawberries into a jar that lasts past Labour Day, without owning a canner. Freezer jam is the entry-point jam — 30 minutes of prep, no boiling water bath, no jar-seal anxiety. The trade-off: it lives in your freezer, not your pantry.

This is the right method if:

• You’ve never made jam before
• You don’t own a canner and don’t want to buy one yet
• You have freezer space but limited pantry shelf space
• You want the brightest, fruitiest flavour (uncooked fruit tastes more like the fruit)

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The one ingredient you can’t substitute

Freezer-jam pectin is a different product from regular Certo / Bernardin Original pectin. They look similar in the canning aisle, sit on the same shelf, and are easy to confuse. They are not interchangeable.

	Regular pectin (Certo, Bernardin Original)	Freezer-jam pectin (Bernardin Freezer Jam, Certo Light)
Activates by	Hard rolling boil + sugar + acid	Room temperature + sugar
Cooking required	Yes (1+ minute hard boil)	No
Sugar amount	High (~7 cups per batch)	Lower (~3–4 cups per batch)
Preserves by	Sealed jar + acid + sugar	Freezing
Use for	Water-bath canned jam	Freezer jam only

If you grab the wrong box, the jam either won’t set (regular pectin without cooking) or won’t preserve properly (freezer pectin in a canning recipe). Read the box.

What you need

• About 4 cups fresh fruit — strawberries (the classic), raspberries, blueberries, peaches, or any combination. Hull and crush as needed.
• About 3 cups granulated sugar — exact amount on the pectin box you bought
• 1 box Bernardin Freezer Jam Pectin (or Certo Light freezer/no-cook pectin)
• 5–6 freezer-safe containers — plastic with tight lids is safest; Bernardin’s 250 mL plastic freezer jars are purpose-built
• A wooden spoon, a potato masher, and a measuring cup
• 30 minutes

The method (~30 minutes start to finish)

The exact ratios are on your pectin box. The general flow:

1. Wash and prep the fruit. Hull strawberries; remove stems and bad spots from any fruit. Crush in a wide bowl with a potato masher. Measure crushed fruit — you want exactly the amount the box calls for (usually 4 cups for a single batch).
2. Mix fruit with sugar. Stir in the granulated sugar gradually. Let the mixture stand at room temperature for 10 minutes, stirring occasionally. This dissolves the sugar and pulls fruit juice out.
3. Mix the pectin separately in a small bowl with the water amount on the box (usually about ¾ cup). Stir or whisk for 1–2 minutes to fully dissolve.
4. Combine. Add the dissolved pectin to the fruit-and-sugar mixture. Stir continuously for 3 minutes. This is the only “work” of the recipe.
5. Fill containers. Ladle into freezer-safe containers, leaving 1.5 cm (½ inch) of headspace at the top. Food expands as it freezes; without headspace the container can crack (glass) or pop the lid (plastic).
6. Cap, label, and let stand. Apply tight lids. Leave at room temperature for 24 hours while the pectin sets. Don’t shortcut this — moving the jars too soon disrupts the gel formation.
7. Freeze. After 24 hours of room-temperature setting, transfer to the freezer.

Storage and shelf life

• In the freezer at −18 °C: 12 months of best quality. Safe longer if the freezer never thaws.
• After opening / thawing: 3 weeks in the refrigerator. Refreezing partially-thawed jam works but the texture suffers; portion into serving-size containers if you’ll only use a bit at a time.

How freezer jam tastes different from canned

• Brighter, fresher fruit flavour — uncooked fruit retains volatile aroma compounds that boiling drives off
• Softer set — not the firm gel of canned jam; more like a thick spreadable sauce
• Lower sugar — most freezer recipes use 30–40% less sugar than canned jam, so the fruit comes through more
• Vivid colour — uncooked strawberries stay red, not the browner red of cooked jam

Some people prefer the canned texture; most find freezer jam strictly better on toast. Try one batch and decide.

Best fruits for freezer jam

Excellent:

• Strawberries — the gateway recipe. Use ripe, fragrant berries; under-ripe ones make pale, less-sweet jam.
• Raspberries — natural pectin content helps the set; seedy texture is normal.
• Blueberries — slightly mashed for the right texture (whole berries don’t gel well).
• Peaches — peeled, pitted, finely diced. Add a tablespoon of bottled lemon juice per batch to brighten.

Good:

• Apricots, plums, nectarines — chop fine
• Blackberries, marionberries — same as raspberries

Skip:

• Citrus — needs different pectin (low-methoxyl) and a different method
• Apples, pears — too firm; they don’t break down to a jam texture without cooking
• Bananas — turn brown and slimy in the freezer

Variations

• Mixed berry freezer jam — strawberries + raspberries + blueberries in roughly equal parts. Cult favourite at Canadian farmers’ markets.
• Strawberry-rhubarb freezer jam — about 3 parts strawberries to 1 part finely chopped rhubarb. The rhubarb stays slightly chunky; texture is delightful. (See our strawberry-rhubarb jam post for the canned version.)
• Low-sugar freezer jam — Bernardin No-Sugar-Needed pectin works for both canning and freezer-jam recipes if labelled “freezer-compatible.” Read the box.

What if it doesn’t set?

Freezer jam can take 24–72 hours to fully gel at room temperature. Don’t move it to the freezer too soon — that locks it into a runny state.

If it’s still runny after 72 hours:

• The pectin-to-fruit ratio was off (too much fruit, not enough pectin)
• The sugar didn’t fully dissolve before you added pectin
• You used a fruit that’s especially low in pectin

Salvage: scrape the jam back into a bowl, stir in a half-packet of additional freezer-jam pectin per cup of jam, let stand another 24 hours. Or call it “ice cream syrup” and use it that way — it’s still delicious, just not jam-textured.

The full troubleshooting paths for any failed jam (canned or frozen) are in our why didn’t my jam set article.

When freezer jam is the wrong answer

Use canned jam (water-bath) instead if:

• You need shelf-stable jars (gift-giving, no freezer space)
• You’re making large batches you want to give away
• You’ll be storing for more than 12 months
• You actually want the firmer set of cooked jam

See our strawberry jam and rhubarb jam posts for the water-bath canned versions.

Next steps

• Freezing & blanching pillar — the broader freezing method.
• Why didn’t my jam set? — if your freezer jam is still runny after 72 hours.
• Strawberry jam (canned) — when you’re ready for the water-bath upgrade.