Smoothies by season

Summer smoothies

Summer is berry season. Danish strawberries arrive in June, and in July and August come raspberries, blackcurrants, redcurrants and blueberries. Cucumber and dill are in season all summer.

The recipes are our own. They are written for Probiotikaguiden and not copied from other sites.

If you use packaged frozen berries from the shop, let them boil (bubble) for at least 1 minute and cool before you blend. That is the Danish Veterinary and Food Administration's advice for all packaged frozen berries. Berries from your own garden that you rinsed and froze yourself can be used raw.

Drink the smoothie straight away, or keep it in the fridge at no more than 5 degrees and drink it within a couple of days. That is the Danish Veterinary and Food Administration's advice.

Watercolour drawing of three glasses of smoothie in red, purple and pale green next to strawberries, a bunch of blackcurrants and a cucumber with dill, while small, round bacteria sit on the rims of the glasses.
Everyday recipe

Strawberry & vanilla with kefir

Danish strawberries, kefir and oats in a simple summer smoothie.

Our own recipe, written for Probiotikaguiden. Not copied from other sites.

Preparation
5 min
Difficulty
Easy
Servings
2 glasses

About the ingredients

  • Danish strawberries are in season from June to August
  • Kefir is milk fermented with a mix of lactic acid bacteria and yeast
  • Oats contain beta-glucans, a type of dietary fibre

From the upcoming book

Would you like more illustrated fermentation recipes? Join the book panel and get free previews.

Everyday recipe

Blackcurrant & blueberry with yoghurt

A dark purple, tangy smoothie with Danish blackcurrants and blueberries from July and August.

Our own recipe, written for Probiotikaguiden. Not copied from other sites.

Preparation
10 min
Difficulty
Easy
Servings
2 glasses

About the ingredients

  • Danish blackcurrants and blueberries are in season in July and August
  • Yoghurt is milk soured with lactic acid bacteria
  • Chia seeds make the smoothie thicker

From the upcoming book

Would you like more illustrated fermentation recipes? Join the book panel and get free previews.

Everyday recipe

Cucumber, dill & kefir

A cold, savoury summer smoothie that tastes a bit like a drinkable tzatziki.

Our own recipe, written for Probiotikaguiden. Not copied from other sites.

Preparation
5 min
Difficulty
Easy
Servings
2 glasses

About the ingredients

  • Danish cucumber and dill are in season all summer
  • Kefir is milk fermented with a mix of lactic acid bacteria and yeast

From the upcoming book

Would you like more illustrated fermentation recipes? Join the book panel and get free previews.

Lactic acid bacteria in the smoothie

All the smoothies here are made with kefir, skyr or yoghurt, which are fermented with lactic acid bacteria. Use products from the chilled section. Some fermented dairy products sold unchilled are heat-treated.

Lactic acid bacteria do not survive high heat. So let boiled berries, rhubarb compote and roasted squash cool completely in the fridge before you blend them with kefir, skyr or yoghurt.

If you already take a lactic acid bacteria supplement as a powder, you can stir your daily dose into your own glass once the smoothie is poured, and drink it straight away. Follow the instructions on the pack, and do not put it in the whole jug if you are sharing the smoothie. Some powders say that pregnant and breastfeeding women and children should only use them after talking to a doctor or health visitor.

Whether the bacteria do better in a smoothie than in a glass of water has not been studied. Read what the research says about timing and food in the article When and for how long should you take probiotics?.