Making Greek Yogurt At Home: An Australian Guide

how to make greek yogurt at home australia

Greek yogurt is a delicious, protein-rich snack that can be made at home with just two simple ingredients: milk and live cultures (aka yogurt). Making Greek yogurt at home is easy and allows you to control the ingredients, ensuring a healthier and more flavorful product than store-bought versions. By heating milk and combining it with live cultures, you can create your own yogurt, which can then be strained to achieve the signature thick and creamy texture of Greek yogurt. The straining process removes the liquid whey, resulting in a higher protein content and reduced lactose sugars. This homemade Greek yogurt can be enjoyed as a snack or used in various Mediterranean recipes, providing a high-protein base for dips, marinades, soups, and cakes.

Characteristics Values
Number of ingredients 2 or 3
Ingredients Milk, live culture yogurt, ice
Milk type Whole-fat milk
Milk quantity 4 cups
Milk temperature 180-200°F
Fermentation time 4-8 hours
Refrigeration time 2 hours or overnight
Refrigeration temperature 4°C
Straining time 8-24 hours
Straining method Cheesecloth, coffee filter, or paper towel

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Heating milk to 180-200°F

To heat the milk to the correct temperature, pour whole milk into a medium saucepan and place over medium-high heat. Stir the milk frequently to prevent it from burning at the bottom of the pan. Continue heating until the milk reaches 180°F, which should take between 5 and 8 minutes. You will know the milk is ready when it is steaming and slightly frothy at the edges.

Once the milk reaches 180°F, reduce the heat to low and maintain this temperature for 5 minutes, stirring continuously with a wooden spoon. Be careful not to let the temperature exceed 200°F, as this may cause the milk to burn or form a skin.

Heating the milk slowly is crucial to prevent a grainy or gritty texture in the final yoghurt. Taking your time at this step will ensure a smooth and creamy result.

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Adding live culture yogurt

Greek yogurt is made by fermenting milk with live cultures. This process is simple and can be done at home with basic kitchen tools and a few ingredients.

Firstly, heat your milk. Place 4 cups of whole milk in a medium pot and heat to 180-200°F (85-93°C), stirring frequently to prevent a skin from forming. Use a thermometer to help you gauge the temperature. As you become more confident, you will be able to tell when the milk is nearing 180°F (82°C) because it will begin to swell and rise.

Next, cool the milk down to 100-110°F (37-43°C). This is the ideal temperature for activating the yogurt cultures.

Now, add your live culture yogurt. Whisk in a 1/4 cup of plain store-bought yogurt per half-gallon of milk. Make sure the container says "live" or "active" cultures. This will introduce the bacteria that make yogurt.

Cover the pot and let it sit in a warm spot for 4-8 hours to thicken and develop tang. A warm oven with the light on is a good option.

After this, you can strain the yogurt in the fridge to make it Greek-style. The longer you strain it, the thicker and more concentrated it will become. This is because the straining process removes the liquid whey, leaving a thicker yogurt. You can strain it for a minimum of 8 hours or up to 24 hours if you like very thick yogurt.

Finally, transfer the strained Greek yogurt to a clean, airtight container and refrigerate for up to 1 week.

You can use your homemade yogurt in a variety of Mediterranean recipes, such as drizzled with honey, blended into a mango smoothie, or as a base for tzatziki sauce.

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Fermenting for 4-8 hours

Fermentation is a process that occurs when bacteria is added to a substance containing sugar, and the bacteria feed on the sugar. The result of fermentation is always acid, gas, or alcohol. In the case of yogurt, the fermentation of milk gives it its distinctively tangy flavour.

After heating the milk to 185-200°F (85-93°C) and then cooling it to 100-110°F, you can add the yogurt starter, which is the most important component of the recipe. The live cultures in the yogurt will thicken the milk and give it its signature sourness. Cover the container and wrap it in a clean kitchen towel to keep it warm. Place it in a very warm place, such as an oven with the light on, and let it stand undisturbed for 4 to 8 hours to thicken and develop its tangy flavour. The longer the fermentation time, the thicker and more concentrated the yogurt will be.

The yogurt will now be ready to strain. For Greek yogurt, this process is done in the fridge, and the length of time depends on your desired consistency. The leftover liquid, known as whey, can be added to smoothies, soups, or used in baking.

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Straining in the fridge

Straining the yogurt is what makes Greek yogurt different from regular yogurt. Greek yogurt is strained to remove the liquid whey, which thickens the yogurt and increases its protein content. The leftover whey is a great source of protein and can be added to sauces, smoothies, soups, and bread. It can also be used in place of buttermilk in baking.

To strain the yogurt, you will need a fine-mesh sieve and cheesecloth, or a coffee filter or paper towel. First, make sure your yogurt is cool. Then, line a large bowl with two layers of cheesecloth and place the sieve over the bowl. Spoon the yogurt into the cheesecloth, cover it, and place it in the refrigerator. The yogurt should strain for at least 2 hours, but can be left for up to 8–24 hours, depending on how thick you want it. The longer you leave it, the thicker and more concentrated it will become.

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Refrigerating for 1-2 weeks

Once you've made your Greek yogurt, you'll need to store it in the fridge. Place your homemade yogurt in a covered container and put it in the refrigerator, where it will last for up to 2 weeks. It's important to refrigerate your yogurt promptly to prevent spoilage.

Yogurt can go bad even when refrigerated, so it's important to inspect it for any signs of spoilage. This can include an unusually sharp or bitter sourness, a watery or clumpy texture, or any signs of mould. If the yogurt has been stored for too long, left uncovered, or exposed to temperature fluctuations, it may develop moulds, yeast, and slow-growing bacteria.

To help preserve the freshness of your yogurt, always use a clean spoon to portion out servings and reseal the container tightly afterward. Additionally, be sure to store yogurt on a refrigerator shelf, rather than in the door, to ensure it stays at a food-safe temperature.

While it is possible to freeze yogurt, it is not recommended as it can compromise the texture.

Frequently asked questions

You only need two ingredients: milk and a small amount of ready-made yoghurt to use as a starter.

The commercial method takes approximately 6 hours maximum. However, some sources recommend leaving it for up to 24 hours for a longer fermentation.

You don't need any special equipment. You can use a soup pot, a thermometer, and a fine-mesh strainer or sieve.

Greek yoghurt is made thicker by straining it to remove the liquid whey. The longer you strain it, the thicker it will become.

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