Overnight Cultured Oats with Banana

Fermenting oats started as a fun experiment with my daughter, Maya, for a school project. It quickly became one of our family's most-requested breakfasts and a firm favourite across the Kultured Wellness community too.

Oats are already a wonderful food. But when you ferment them, something even better happens: the anti-nutrients break down, the carbohydrate content drops, and the whole thing becomes significantly easier for your gut to handle. Pair that with banana, which is rich in tryptophan that your body converts into serotonin, and you've got a breakfast that genuinely makes you happy.

Here's how we make them.

Why ferment oats?

Oats contain a specific type of fibre called beta-glucan, which can help reduce LDL cholesterol, lower inflammation, and support healthy blood pressure. But like most grains, they also contain anti-nutrients that can make them harder to digest and reduce the absorption of their minerals.

Fermenting changes that:

  • Anti-nutrients are broken down, making digestion significantly easier
  • Carbohydrate content is reduced, lowering the blood sugar spike
  • Mineral absorption improves
  • Beneficial bacteria from the kefir or yoghurt are introduced to support your microbiome

The result? Oats that actually belong in a gut-healing kitchen.

Watch how to make it

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Everything you need to get fermenting:

Coconut Kefir Culture Starter

The culture that transforms your oats and your gut

Shop now

Coconut Yoghurt Culture Starter

An alternative culture that adds bifido strains for immune support and digestion

Shop now

Overnight Cultured Oats with Banana recipe

Ingredients

Method

  1. Add the oats to a 1 litre glass jar.
  2. Add the sliced banana to the jar.
  3. Pour in the kefir, then add the water, enough to cover the oats and banana completely. Use a glass weight or the banana skins to keep everything submerged under the liquid.
  4. Ferment on the bench for 2 to 3 days, depending on the weather. The oats will smell fermented and taste pleasantly tart when ready.
  5. Serve raw for maximum probiotic benefit, or cook gently on very low heat to make a creamy porridge. Note that cooking will reduce some of the beneficial bacteria.

A note on cultures

You can use Kultured Wellness Coconut Yoghurt instead of kefir to ferment your oats. The yoghurt will add beneficial fats and more bifido strains to support immune function and the digestion of vegetables.

Shop the recipe (again)

Coconut Kefir Culture Starter

The culture that transforms your oats and your gut

Shop now

Coconut Yoghurt Culture Starter

An alternative culture that adds bifido strains for immune support and digestion

Shop now

More gut-loving recipes you'll love

  • Sleep Tea Gummies are a calming bedtime ritual built on glycine and Sleep Tea, perfect for nights when winding down feels harder than it should.
  • Strawberry Pancake Muffins are soft, lightly sweet, freezer-friendly muffins made with fermented prebiotic fibre. Lunchbox-ready and quietly nourishing.
  • Berries and Cream Probiotic Gummies are a simple, kid-friendly treat that sneaks in gut-loving goodness without anyone noticing.

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