Fermented Red Onions

Crisp and tangy onions - perfect next to steak or BBQ

Ingredients

  • 5 large red onions, thinly sliced

  • 1 tbsp sea salt

  • 1 litre filtered water

Method

  • Pack onions tightly into a jar.

  • Dissolve salt in water to make a brine.

  • Pour over onions to fully submerge and weigh down.

  • Ferment loosely covered at room temperature for 5–7 days, tasting from day 4.

  • Refrigerate once pleasantly tangy.

Notes

  • Onions must stay fully submerged to ferment safely.

  • Flavour mellows and sweetness develops as they ferment.

  • Keeps refrigerated for several weeks.

This method gives a clean, crisp, lightly sour fermented onion that works well on salads, sandwiches, and cooked dishes.

Access the full recipe with detailed steps and exact measurements on the Fermentista App 

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