Fermented Leek Cream Recipe

Leeks often hide soil between their layers, so proper cleaning is important.

1. Slice the leeks lengthwise.

2. Rinse thoroughly between the layers.

3. Use only the white and light green parts.

Clean vegetables are the foundation of a successful fermented leek cream recipe.

Step 2: Slice the Leeks

Slice the leeks into thin rings or small pieces.

Smaller pieces help:

• release natural juices

• ferment more evenly

• blend smoothly later

This step prepares the base for your fermented leek cream.

Step 3: Salt and Massage

Place the chopped leeks into a bowl and add 10 g of salt.

Massage the leeks for 2–3 minutes until they release liquid.

This process:

• creates the natural fermentation brine

• starts the fermentation process

• helps beneficial bacteria grow

Salt is crucial for making safe and delicious fermented leek cream.

Step 4: Pack the Jar

Pack the leeks tightly into your fermentation jar.

Press down firmly to remove air pockets.

Add just enough water to fully submerge the leeks. Keeping vegetables below the brine prevents spoilage.

This is where a high-quality fermentation jar really helps.

For example, the Mariposa Jar is ideal because the swing-top lid creates a stable fermentation environment.

Step 5: Ferment the Leeks

Let the jar ferment at:

Temperature: 18–22 °C
Time: 5–7 days

Your leeks are ready when:

• they taste mildly sour

• the smell is fresh and onion-like

• the brine is cloudy but not slimy

If your jar does not have an airlock, open it briefly each day to release pressure.

Want to avoid common beginner mistakes? Read our fermentation guide.

Step 6: The Fermented Leeks

After several days of fermentation, the leeks develop their characteristic tangy aroma.

These fermented leeks are now the base for your fermented leek cream.

Step 7: Blend into Cream

Now transform the fermented leeks into a smooth cream.

1. Drain the leeks (reserve some brine).

2. Blend until smooth.

3. Add:

• cream or crème fraîche

• a splash of brine for texture

Optional:

• lemon juice for brightness

• garlic or white pepper for extra flavor

For an ultra-smooth texture, pass the mixture through a sieve.

Finished Fermented Leek Cream

The finished fermented leek cream should be creamy, slightly tangy, and aromatic.

Yield: about 500 ml fermented leek cream.

Storage

Store your fermented leek cream in the refrigerator.

• Shelf life: 2–3 weeks

• Flavor continues developing over time

• Always use clean utensils

How to Use Fermented Leek Cream

This versatile fermented leek cream recipe works beautifully as:

• a spread on sourdough bread

• a dip for vegetables

• a pasta sauce base

• a topping for roasted potatoes

• a flavor boost for soups

Fermented sauces like this are a great way to add probiotics and depth to everyday meals.

The Right Fermentation Tools

If you want perfect fermentation results, the right jars make a big difference.

Our Fermentation Kit is designed specifically for fermentation. 

Another excellent option is the Mariposa Jar, a classic swing-top fermentation jar that keeps vegetables safely submerged during fermentation.

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