Thermomix strawberry jam (with frozen berry jam option)

Name: Thermomix Strawberry Jam
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Ingredients: 500 g Strawberries; 350 g Sugar; 1 Lemon (Juice only)

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A simple Thermomix strawberry jam recipe using fresh or frozen berries. You'll never buy jam again.

Strawberry jam made in the Thermomix - 3 jars on a marble bench top

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Why make your own jam
Ingredients
Substitutions
Instructions
Note
Variations
Equipment
Stove top
Storage
Serving
FAQ
Recipe

Why make your own jam

Control the ingredients – You can skip the artificial preservatives, colours, and excess sugar found in many store-bought jams and know exactly what's in it.
Customise the flavour – Want it less sweet, a little tangy, or with a little something extra (like vanilla or spice)? Homemade jam lets you make it exactly to your taste.
Satisfaction - it's incredibly satisfying to open a jar of your own homemade jam.

Ingredients

To make strawberry jam in the Thermomix you will need:

Strawberries - fresh or frozen (thawed)
Sugar - we use raw sugar but caster sugar or rapadura will work
Lemon juice - preferably freshly-squeezed

See recipe card for quantities.

Substitutions

This recipe works just as well for mixed berries and raspberries.

You can also use frozen berries instead of fresh. Just thaw the berries before using them.

White sugar is the most popular for making jam but we have also used raw sugar and rapadura sugar. We wouldn't recommend using brown sugar.

You can reduce the sugar a little to taste but the ratio of fruit to jam can't be below 2:1 (ie for every 100g of strawberries you will need at least 50g of sugar).

Instructions

Here's how to make Thermomix strawberry jam.

Thermomix making strawberry jam - A Thermomix with steamer basket on top

Step 1

Place the strawberries in the bowl of the Thermomix. If you like smooth jam then chop to your liking first. Select 'Varoma' and cook for 10 minutes on speed 2. Then add the sugar and lemon juice and cook 'Varoma' speed 2 for 15 minutes.

Testing for doneness of strawberry jam - not done - a blob on a plate

Step 2

Check for doneness. Place a blob of jam on a cold (pop it in the freezer for a few minutes) plate.

Testing strawberry jam - blob of jam on a plate with line through it

Step 3

If, when you run your finger through it, the jam doesn't stay separated, it's not ready. Cook for a further 5 minutes then check again.

Testing strawberry jam - blob of jam on a plate with solid line through

Step 4

When the two halves stay separated the jam is ready to be jarred.

Pouring homemade strawberry jam into jars

Step 5

Very carefully pour the hot jam into your sterilised jars. A stainless steel funnel helps here.

Turning homemade strawberry jam jars onto their heads using a jar holder.

Step 6

Carefully turn the jars over to stand on their heads to cool. Use jam making tongs if you have them otherwise an oven mitt works well.

Homemade strawberry jam upside down to seal. 3 jars on a white marble bench.

Step 7

Leave to cool upside down on the bench. This helps the jars to seal. You'll know it's sealed properly when the lid sucks in and can no longer be depressed (you can't press it down in the middle).

Note

The cooking time isn't set in stone for jam. That's why it's really important to check if it has set. If not, cook another 5 minutes. Repeat as many times as necessary (it shouldn't take much longer though).

Homemade strawberry jam made in the Thermomix

Variations

You can also change up this recipe with extra flavours.

Vanilla - add vanilla beans to the jam while it cooks.
Rhubarb - substitute up to ⅕ of the strawberries with chopped rhubarb.
Chili & basil - add finely chopped chilli and fresh basil leaves.

Equipment

They're not 100% neccessary but two tools I highly recommend for jam making are:

Of if you think you're going to be making a lot of jam, you can go all out and get a jam making tool kit.

Stove top

This recipe can be adapted to the stove top. You will need to chop the strawberries by hand.

Then heat them in a saucepan until really fragrant.

Add the sugar and lemon juice and simmer for 15-20 minutes and test for setting using the method pictured above.

You can use this method to make a tiny batch of jam. I once did it when we were staying in an Air BNB and I forgot the jam. We had strawberries and a few sachets of sugar.

Storage

If the jars are properly sterilized, the jam is shelf-stable for up to one year.

Once open, store the jam in the fridge.

Serving

Our most favourite thing to serve strawberry jam on is lemonade scones.

FAQ

Do you have to add lemon juice to strawberry jam?

Yes. The acidity in the lemon juice activates the pectin in the strawberries - that's the stuff that makes you jam set.

Recipe