How to Make Greek Yogurt in a Yogurt Maker, Step by Step

Making Greek yogurt in a yogurt maker means heating pasteurized whole milk to at least 160 degrees Fahrenheit, cooling it to 100 to 115 degrees, stirring in a starter culture, and holding the machine at a steady 110 degrees Fahrenheit for five to 12 hours. Once fermentation ends, the yogurt cools at room temperature for two hours, chills in the refrigerator for at least six hours, then strains through cheesecloth for five to eight hours or longer to pull out the whey. That last step, more than any single ingredient, is what turns ordinary homemade yogurt into thick Greek yogurt, and a dedicated yogurt maker earns its place by keeping fermentation temperature steady the whole time.

How Do You Heat and Cool the Milk Before Culturing

Heat and cool the milk before adding a starter culture. The heating step denatures milk proteins so the finished yogurt sets thicker, and the cooling step brings the milk down to a temperature that will not kill the live cultures added next.

Pour the milk into a heavy-bottomed pot and warm it over low to medium heat for 15 to 20 minutes, stirring occasionally so a skin does not form on top.

Some cooks bring the milk to a gentle simmer, then lower the heat and stir for five more minutes to hold it near the target without scorching the bottom. Once the milk reaches temperature, set the pot aside or place it in an ice bath.

Cooling at room temperature takes about 20 to 30 minutes; an ice bath speeds that up. Test readiness by holding a clean finger in the milk for five to 10 seconds. If it feels comfortably warm rather than hot, the milk is close to the 108 to 115 degree window where cultures activate fastest.

Which Heating Temperature Is Right, 160 or 180 to 185 Degrees

Sources disagree on how hot the milk should get. Cultures for Health, a primary source for yogurt starters and equipment, lists 160 degrees Fahrenheit as the working minimum. Live Eat Learn, The Greek Foodie, and Home Cooking Collective all recommend going higher, in the 180 to 185 degree range, because the extra heat denatures more protein and produces a noticeably thicker set before straining even begins.

The higher range is the more common recommendation among the recipe sources and lines up with the general dairy science reason given for heating milk in the first place, so treat 180 to 185 degrees as the practical target and 160 degrees as the floor you should not drop below.

How Much Starter Culture Do You Add and When

Add two to three tablespoons of plain yogurt with live active cultures, or a packet of commercial starter, once the milk has cooled to 100 to 115 degrees Fahrenheit. For a first batch, a smaller amount, one tablespoon up to a quarter cup of plain yogurt, works well.

Do not just drop the starter into the full pot of milk. Spoon out a few tablespoons of the cooled milk into a separate cup, whisk in the starter until smooth, then pour that mixture back into the rest of the milk and stir gently. This tempers the culture and keeps clumps from forming.

Larger batches, such as a half gallon of milk, typically use a full quarter cup of plain yogurt as the starter. Cultures for Health also sells a starter packet labeled specifically for Greek yogurt, which some cooks prefer for the first batch before switching to saved yogurt from later batches.

How Long Do You Ferment Greek Yogurt in a Yogurt Maker

Ferment the cultured milk at 110 degrees Fahrenheit for five to 12 hours in a dedicated yogurt maker, checking after the five-hour mark. Longer fermentation builds a tangier flavor; shorter fermentation gives a milder taste.

A yogurt maker is worth the counter space because it holds that 110 degree target without the swings a turned-off oven or a sunny counter can produce. Fermentation slows down if the temperature drops below 110 degrees, and temperatures above 115 degrees risk killing the cultures outright, so a machine built to hold one number does the job a home cook would otherwise have to babysit.

How Do You Know When the Yogurt Is Done Fermenting

Tilt the container gently. Finished yogurt moves as one mass away from the side of the pot instead of running or sloshing. If it still moves like liquid milk, give it another hour or two and check again rather than guessing by the clock alone.

How Long Does an Instant Pot Take Compared with a Standalone Maker

An Instant Pot’s yogurt function runs at roughly 110 degrees Fahrenheit for eight to 12 hours, which sits at the longer end of the standalone maker’s range. The appliance cycles the temperature automatically, so there is less guesswork than monitoring a pot in a warm oven, though the tilt test still applies before moving on to cooling.

How Do You Strain Greek Yogurt to Get the Thick Texture

Line a fine-mesh sieve or colander with six to eight layers of cheesecloth, set it over a bowl, and gently scoop the fermented yogurt in without squeezing. Let it drain in the refrigerator for a minimum of five to eight hours, longer for a thicker result.

Straining is the step that actually makes yogurt Greek. Regular yogurt and Greek yogurt start from the same fermentation process; the difference is that Greek yogurt has had much of its whey, the thin liquid that separates out, drained away. That concentrates the protein and thickens the texture without adding anything.

Set the lined strainer over a bowl deep enough to catch the whey without the bottom of the sieve touching the liquid, then leave the whole setup in the refrigerator. Resist the urge to press or squeeze the cheesecloth bundle to speed things up; gravity alone gives a smoother result, and squeezing pushes solids through the cloth along with the whey.

How Long Should You Strain for a Thinner or Thicker Result

Two hours produces a runnier, yogurt-drink consistency, five to eight hours gives a standard Greek yogurt texture, and 10 to 12 hours up to a full 48 hours produces a spreadable, labneh-like thickness. Check the consistency every 12 hours if you are straining longer than an overnight batch, and stop once it reaches the texture you want.

What Can You Line the Strainer with Besides Cheesecloth

Cheesecloth is the traditional choice, but it is not the only option, as the table below shows.

Material	Layers	Notes
Cheesecloth	6 to 8	Traditional choice; cut into roughly 18-inch squares
Muslin	1 to 2	Works as well as cheesecloth; use as-is
Thin dish towels	1 to 2	Use a tightly knit towel; thick terry towels absorb too much yogurt
Coffee filters	1	Use enough filters to cover the base in one layer
Clean pillowcase	1	A viable substitute when nothing else is on hand

Whatever you strain with, save the whey rather than pouring it out. It works in place of water or milk in bread dough, pancake batter, or smoothies, and it keeps in the refrigerator for cooking uses over the following days.

What Other Equipment Can Ferment Yogurt Besides a Dedicated Maker

An Instant Pot, a conventional oven, or even a microwave can all hold yogurt at fermentation temperature if you do not own a standalone yogurt maker. Each swaps convenience for a bit more attention from the cook.

Instant Pot

Pour the cooled, cultured milk into the inner pot, seal the lid, and select the yogurt setting for eight to 12 hours. Because the appliance cycles automatically near 110 degrees Fahrenheit, it removes most of the guesswork that comes with monitoring a pot by hand.

Oven

Turn the oven light on, which raises the interior a few degrees above room temperature, or set the oven itself to 110 degrees Fahrenheit if the dial goes that low. The higher-temperature method ferments in three to four hours, while the lower, light-only method takes six to eight hours. Leave the covered pot or jars on the middle rack and avoid opening the door, which lets heat escape.

Microwave

Place the covered pot of cultured milk inside the microwave with the interior light left on and the door closed. The microwave itself stays off; the bulb’s warmth is enough to hold a gentle fermentation temperature in a small, enclosed space.

How Much Milk Should You Use and What Yield Can You Expect

Most home batches start with one quart, 32 ounces, of milk, though recipes range from four cups on the small end to a half gallon for a larger batch. Expect the finished, strained yogurt to weigh in at about half to two-thirds of the milk you started with.

Here is a worked example using a one-quart batch. Heat 32 ounces of whole milk to 180 degrees Fahrenheit, then cool it to 110 degrees.

Whisk three tablespoons of plain yogurt with a few tablespoons of the warm milk, stir that back into the pot, and pour everything into the yogurt maker for six hours at 110 degrees. After the tilt test confirms it has set, cool it for two hours at room temperature, then refrigerate for six hours.

Strain the chilled yogurt through six to eight layers of cheesecloth for six hours. From that one-quart batch, expect 2 cups of finished Greek yogurt after straining. A half-gallon batch scales the same ratios up, and a smaller batch scales them down; the temperatures and timings stay the same regardless of quantity.

Store finished Greek yogurt in an airtight container in the refrigerator, where it keeps for one to two weeks.

Full Timeline for Making Greek Yogurt in a Yogurt Maker

Start to finish, budget 24 to 48 hours from heating the milk to eating the finished yogurt, most of which is unattended fermenting, chilling, and straining time. The table below lays out each phase.

1. Heat milk to 160 to 185°F for 15 to 20 minutes.
2. Cool milk to 110°F for 20 to 30 minutes.
3. Ferment in yogurt maker.
4. Cool after fermenting at room temperature for 2 hours.
5. Refrigerate at about 38 to 40°F for 6 hours minimum.
6. Strain for Greek texture while refrigerated for 2 to 8 hours.

What to Do if the Yogurt Does Not Set or Turns Out Thin

Most failures involving runny homemade yogurt trace back to temperature, either during fermentation or in the starter itself. Work through temperature first before blaming the recipe.

If the yogurt is still liquid after the full fermentation window, check whether the maker actually held 110 degrees Fahrenheit the whole time, which can leave the batch under-set even after 12 hours.

An oven thermometer placed next to the container for one cycle will tell you whether your machine runs true. Next, check the starter. A starter packet or a spoonful of store-bought yogurt without live active cultures on the label will not ferment milk no matter how precise the temperature is, so confirm the label before ruling out everything else.

A batch that sets properly in the maker but still seems thin once it is done has not failed at all. Fermentation and straining are two separate jobs: fermentation sets the yogurt into a soft curd, and straining is what removes whey and builds Greek-style thickness. A soft-set yogurt straight out of the maker is completely normal; give it more time under cheesecloth rather than more time in the machine.

If straining itself stalls and the whey stops draining, switch to a fresh section of cloth or a clean coffee filter, since a clogged cloth slows drainage far more than extra straining time helps.

Frequently Asked Questions

Can You Use Regular Yogurt Starter Instead of a Greek Yogurt Starter?

Yes. Both start the same way, with live active cultures added to warm milk. Greek yogurt is not a different culture; it is regular yogurt that has been strained to remove whey, so any starter with live cultures will work as the base.

How Long Does Homemade Greek Yogurt Last in the Refrigerator?

Finished Greek yogurt keeps for one to two weeks in an airtight container in the refrigerator. Keep a few tablespoons back as starter for your next batch before it runs out.

What Should You Do with the Leftover Whey?

Save it rather than discarding it. Whey can replace some of the water or milk in bread dough, pancake batter, or oatmeal, and it blends well into smoothies for extra protein.

Can You Make Greek Yogurt Without a Yogurt Maker?

Yes, using an oven with the light on, a microwave with the light on, or an Instant Pot’s yogurt function, all of which can hold the milk near the 110 degree fermentation target. A dedicated maker simply holds that temperature more consistently with less attention from the cook.

Why Is My Yogurt Runny Even Though It Set in the Maker?

A soft set out of the maker is expected and not a sign of failure. Greek yogurt gets its thickness from straining, not from fermentation, so a batch that looks like a loose custard before straining will still turn into thick Greek yogurt after several hours under cheesecloth.

The whole process runs on two things: holding a steady 110 degrees Fahrenheit during fermentation and giving the strained batch enough time under cheesecloth to reach the thickness you want. Master those two variables and the rest, from milk quantity to which appliance holds the heat, is just a matter of preference.

References

• Yogurt: Greek Yogurt, Cultures for Health
• Greek Yogurt, Live Eat Learn
• How to Make Greek Yogurt, The Greek Foodie
• How to Make Greek Yogurt, Bigger Bolder Baking
• Homemade Greek Yogurt, Home Cooking Collective
• How to Strain Yogurt to Make Greek Yogurt and Labneh, Tori Avey
• Instant Pot Greek and Bulgarian Yogurt, Cultures for Health

Sources read in September 2026.