How to Make an Easy Batch of Milk Kefir

Milk kefir made from storebought kefir
Use storebought kefir to make an easy batch at home!

Make An Easy Batch of Healthy Milk Kefir

Kefir is a fermented product made from milk (there is also kefir made from sugar water or coconut water) that’s chock full of probiotics and nutrients. I like kefir plain but it’s delicious with a bit of fruit, honey, or maple syrup added for flavor. However, I don’t like buying plastic bottles of, well, ANYTHING, from the store every week. The cost and plastic waste really add up, especially since my son can drink an entire 16-ounce bottle of kefir in one gulp… so I started making my own milk kefir to keep those healthy probiotics in our diets without spending a fortune.

There are several ways to make kefir and there are different strains of bacteria involved in each method. For these instructions, I am going to share step-by-step instructions to make milk kefir from store-bought kefir. This is super easy and the cost is minimal, plus you don’t need to find a source for a kefir starter kit to create a batch and keep it going.

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yogurt, kefir, and other cultured dairy products are available at the store... but you can also make your own!
Kefir, yogurt, sour cream, and many other cultured dairy products are available at the store… but you can make your own, too.

Is Kefir the Same as Yogurt?

Kefir is similar to yogurt because both of these dairy products are inoculated with beneficial bacteria that convert the lactose (the sugar in milk) into lactic acid, giving the finished product a tart flavor. However, kefir and yogurt each contain different strains of bacteria (kefir may contain many more strains of probiotics than yogurt) and they ferment at different temperatures. Kefir also has a thinner consistency compared to yogurt and is even a little bit fizzy when fresh and full of active bacteria.

You can also make your own easy yogurt from cow’s milk or goat’s milk and plain yogurt or yogurt starter!

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strawberry milk kefir
Add fruit or flavorings to your kefir for a delicious and healthy drink!

But Is Kefir Really Good For You?

Kefir is good for most people because it can help you consume extra protein, feel full longer, and repopulate your gut with healthy probiotics. However, there are some people who should avoid consuming this probiotic-rich dairy product, plus it isn’t good for anyone to consume too much of a good thing!

Check with your doctor or do a bit of research if you:

  • are lactose intolerant
  • have a compromised immune system
  • are taking medications that suppress your immune system
  • have dairy allergies

Some people get gassy, bloated, or experience other problems after consuming kefir if their digestive system isn’t used to these bacterial strains. If you are having digestive issues, kefir MAY help but you should start out slow and increase your consumption of kefir and other probiotic-rich foods over time. Be sure to add prebiotic foods (including many fruits, vegetables, and whole grains) to feed the healthy bacteria in your gut, too.

If you are experiencing health issues, please seed medical attention. These statements are not intended as medical advice.

read the label to make sure that the milk kefir contains live and active cultures
Use kefir that contains live and active cultures to culture a new batch.

Easy Milk Kefir from Purchased Kefir

If you are able to purchase milk kefir from the grocery store, you can use it to make a batch of super easy homemade kefir. All you need is milk, a pan, thermometer, and a non-reactive container to incubate the culture.

It’s very important to start with a fresh container filled with live and active beneficial bacteria to start your new batch of kefir. I also recommend purchasing kefir that has a wide variety of bacterial strains to give your digestive system the benefit of even more probiotics to keep you healthy. These microbes help your body make the best use of the food you eat and give a great boost to your immune system, too.

Here’s how to make your easy batch of milk kefir from a purchased container of kefir:

  1. Heat one quart of plain milk to 180 degrees Fahrenheit in a non-reactive pan
  2. Cool the milk to 73 to 78 degrees Fahrenheit
  3. Mix 2 to 3 tablespoons of plain milk kefir with 2 or 3 tablespoons of the milk
  4. Pour this mixture with the rest of the milk and stir
  5. Cover loosely and culture at room temperature for 8 to 12 hours, or until thick

Tips for Making the Best Milk Kefir

To ensure a healthy batch of kefir, follow these tips:

  • Use plain kefir to avoid adding bacteria from added fruits or flavorings
  • Heat milk to 180 degrees F to kill potentially undesirable bacteria
  • Make sure milk is 73 – 78 degrees F to avoid killing the culture with temperatures that are too high
  • Sanitize all equipment that touches your milk or culture to prevent the growth of non-beneficial bacteria
  • Incubate kefir until it becomes fairly thick and bubbly, about 12 hours
  • Refrigerate your kefir for 2 hours before consuming
  • Make your next batch within 7 to 10 days to keep your culture alive and well
  • You may start a new batch of kefir from the most recent batch using these instructions until the texture or flavor of your kefir is off. (Feed an off batch to your chickens… unless it smells really off.)
Milk kefir grains are a more sustainable way to culture a new batch indeterminately... this is my next project!
I ordered kefir grains from Azure Standard. Check to see if you are eligible to order from this buying club! Advertisement

More Ways to Make Milk Kefir

The first time I made a batch of homemade kefir, I used a packet of dried starter culture purchased through one of my buying clubs. This method also worked very well, and I like the fact that there was minimal packaging plus the packets of culture remain viable for about 1 year when kept refrigerated.

To make a batch of easy milk kefir from dried starter culture you will follow the same instructions that I shared above, with one minor tweak. You’ll need to pour the dried culture in a clean bowl and add a few drops of the cooled milk at a time, mixing thoroughly after each addition. This will rehydrate the powder without causing lumps that could slow down the growth of your culture.

You may also purchase kefir grains to make your own easy kefir. The biggest difference between purchasing starter kefir (both in powdered form or plain kefir from the store) and kefir grains is that well-cared-for kefir grains may be re-used indefinitely, while powdered starter or liquid kefir may only be used a few times with care. Kefir grains cost more to get started and require some maintenance to keep them healthy. Because I’m always looking for more ways to increase my self-reliance, try kefir grains is my next kitchen science project!

water kefir is another great option, especially if you don't consume dairy
Water kefir grains are another option for making your own gut-healthy probiotics. I ordered mine through Azure Standard buying club and will be trying them soon! Advertisement

Why Make Your Own Kefir?

A lot of people wonder what the big deal is and why would they bother drinking kefir or making it for themselves. Of course, it’s completely up to each of us to decide what is best for our health, budget, and time commitment.

Here is why I started making kefir for my family:

  • I take antibiotics before dental procedures, which kills beneficial gut bacteria
  • The probiotics in kefir are beneficial for keeping our digestive system working properly
  • Probiotics are helpful for our immune systems
  • By consuming probiotics in our food, we spend less on probiotic supplements
  • We like the flavor of kefir, yogurt, and other fermented dairy products
  • Kefir and other Lacto-fermented foods may also be healthy for our livestock and pets
  • Making kefir reduces our household waste and is better for the environment

If you have your own dairy animals, you can make kefir, yogurt, cottage cheese, queso fresco, and other cheeses with the excess milk.

Learn how to make your own homemade probiotics for your chickens.

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5 Comments

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