How to Make Greek Yogurt

Our Greek Yogurt Starter Culture is as a Thermophilic Yogurt, which in simple terms means it must be cultured using a yogurt maker. It is a true heirloom starter culture that can be used indefinitely and is very easy to use.

The ideal temperature is 42 degrees. However, not all yogurt makers will have a temperature setting. If not, don’t worry. It will usually be around 42 degrees by default.

No special equipment required other than a yogurt maker which are reasonably priced and can usually be found online for under €30.

You will need:

  • Starter Culture
  • Glass Jars
  • Organic full fat milk (or non organic)
  • 150ml of single pasteurised cream (you can use double cream for a really thick yoghurt).
  • A yogurt maker capable of heating to 42 degrees for at least 12 hours.

How to activate your freeze dried Yogurt Starter

Boil 250ml of full fat pasteurised milk and let it sit to bring back down to room temperature. Stir in 50ml of single cream. Add the freeze dried yogurt starter culture to the mixture and stir well for 1-2 minutes to ensure it is fully incorporated. Place the mixture in the yogurt maker for 5-12 hours (42 degrees) until you notice the milk has started to change texture and thicken (more yogurt like). This usually happens at around 6 hours. Once set, cover with a tight lid and and allow to cool for 2 hours at room temperature.

Place it into the fridge and leave it to set for at least 2hrs. Once set, remove two tablespoons from the mixture for the next batch and follow the instructions below. You can consume the remainder of the yogurt left after removing the two tablespoons or save it for future batches.

How to make Greek Yogurt:

  • Add the starter culture (2 tablespoons per 500ml from the activated culture) into your yogurt maker.
  • Pour 500ml of boiled then cooled down milk into the jar along with 100ml of single cream.
  • Stir the mixture very well.
  • Heat the yogurt to 42 degrees for 6-12 hours (until thick). Usually we find 6 hours is enough. Check after 6 hours to see if it has set. If it has not set, leave up to 12 hours, checking every 30-60 minutes.
  • Once set, cover with a tight lid and and allow to cool for 2 hours at room temperature.
  • Place the yogurt into the fridge for at least 6 hours.
  • It is now ready to eat.
  • Be sure to save enough of the cultured yogurt in a glass jar and place in the refrigerator to re-culture future batches. Always re-culture from fresh yogurt, no older than 7 days for the very best results.
  • Enjoy the remaining yogurt at room temperature or refrigerate for later consumption. It will keep in the refrigerator up to 7 days.
  • Repeat at least once a week to maintain a healthy starter culture.

Note: Never place your starter culture into hot milk. Always allow it to cool back down after boiling!

Troubleshooting & FAQs:

If you experience any problems with your starter culture please contact us immediately as refunds/replacements will only be issued if you have contacted us within the first three days of receiving your live cultures.

What type of milk can I use?

You can use organic or non-organic, but whole milk makes the thickest yogurt, and is what we prefer and use.

We use dairy milk at all times and as such do not recommend this starter culture for use with goat’s milk, soy milk, or coconut milk. Although it is possible to use other milk types doing so could possibly damage or weaken the starter culture long-term.

Yogurt cultured with low fat milk is likely to be very thin.

It’s always a good idea to wait until you have some spare starter culture available before experimenting with different milk types. At least this way you can always start over if it goes wrong.

Why is it necessary to cool the cultured yogurt to room temperature for 2 hours before refrigerating?

Giving the yogurt 2 hours at room temperature allows for a slower cooling process than placing it directly in the refrigerator. This helps with the transition from hot to cold temperatures, to help maintain the health of your starter culture as sudden changes in temperature can harm the starter culture.

My yogurt has separated or turned really thin?

  • If the yogurt separates, it has over fermented and been in the yogurt maker to long. Stir the yogurt and allow it to set anyway. It will end up a little thin but perfectly fine to eat still.
  • If the yogurt is very thin, it has not had long enough in the yogurt maker.

How do I make a thicker yogurt?

You can make your yogurt thicker by culturing with half milk and half cream for a much thicker and creamier yogurt.

You can also strain the yogurt overnight using a cheesecloth or muslin to achieve thickness. Straining the yogurt overnight will result in a much thicker yogurt.

The instructions above indicate that you should heat/boil the milk, then allow to cool. Is it possible to skip this step, and use milk straight from the fridge? ?

The main reason to boil the milk before fermenting is to kill any bacteria that may be present in the milk as it may compete with bacteria in the starter cultures. 

Heating the milk also improves the texture of the yogurt. Skipping this step will make a very profound difference to the structure of your yogurt. Without this step your yogurt will be thinner and much more fragile.

There you go!

These instructions should only serve as a guide and are a reflection of what works for us. After a while you are likely to find your own way and methods which is the beauty (and fun!) of working with Yogurt Starter Culture.

Our products are living cultures and for best results they should ideally be used within 48hrs of receiving them. The faster the cultures are used the higher the success rate. All live cultures require settling after being shipped. It is normal for cultures to take 3-5 brews to fully settle into their new environment. Please see instructions for more details.