How to Make Yogurt at Home: A Simple Step-by-Step Guide

How do you make yogurt at home? Heat milk to 180°F, cool it to 110°F, stir in 2 tablespoons of plain yogurt with live cultures, and keep it warm for 6 to 10 hours. Then chill it for at least 4 hours. You need milk, a starter, a pot, a thermometer, and a clean jar. Homemade yogurt costs less than most store tubs and has no added sugar or thickeners unless you add them. This guide covers the exact steps, Greek yogurt and skyr, glass jar packaging that cuts plastic waste, and quick answers to common yogurt questions.

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By Amelia Claire Jun 5, 20260 comments

Topic	Quick Answer
Ingredients	Whole milk and 2 tablespoons plain yogurt with live cultures
Heat milk to	180°F (82°C)
Cool milk to	110°F (43°C)
Incubation	6 to 10 hours at 105°F to 115°F
Chill time	At least 4 hours
Fridge life	About 7 to 10 days
Greek yogurt	Strain plain yogurt for 2 to 4 hours
Skyr	Use skim milk, then strain for 4 to 8 hours
Freezing	Safe, but the texture turns grainy

How to Make Yogurt at Home

Making yogurt is simple because friendly bacteria do the work. Two cultures, Lactobacillus bulgaricus and Streptococcus thermophilus, feed on lactose, the natural sugar in milk. They turn it into lactic acid, which thickens the milk and adds the tang. A batch takes about 20 minutes of hands-on work and 6 to 10 hours of resting time.

Yogurt Ingredients

You need only two ingredients, plus a few basic tools.

4 cups (1 quart) whole milk: Whole milk sets thickest and creamiest. Low-fat milk gives a looser yogurt.
2 tablespoons plain yogurt with “live and active cultures”: This is your starter. Pick a fresh, plain, unflavored cup.
2 tablespoons dry milk powder (optional): It adds body for a thicker set.
Tools: A heavy pot, a kitchen thermometer, a whisk, clean glass jars with lids, and a cotton kitchen towel.

If a batch turns out thin, the starter has likely weakened. Restart with a fresh cup of store-bought yogurt.

How to Make Yogurt (Step-by-Step Procedure)

Wash everything. Clean the jars, pot, and whisk with hot, soapy water. Clean tools keep unwanted bacteria out.
Heat the milk. Warm it in the pot over medium-low heat, stirring now and then, until it reaches 180°F. This changes the milk proteins so the yogurt sets thicker.
Cool the milk. Let it cool to 110°F. This takes about 30 minutes on the counter, or 10 minutes in an ice bath. Milk that is too hot kills the cultures. Milk that is too cool leaves them asleep.
Add the starter. Whisk the starter with a half cup of the warm milk until smooth. Pour it back into the pot and stir gently. Add the milk powder here if you use it.
Fill the jars. Rinse the jars with hot water so they are warm. Pour in the milk and close the lids.
Keep it warm. Hold the jars at 105°F to 115°F for 6 to 10 hours. Use an oven with only the light on, a cooler filled with warm water, or a yogurt maker. Wrap the jars in a thick cotton kitchen towel to hold in heat. Do not stir or shake them.
Check the set. After 6 hours, tilt one jar. The yogurt should wiggle like soft pudding. Longer incubation makes a tangier flavor. Clear liquid on top is whey, and it is fine.
Chill. Refrigerate for at least 4 hours. The yogurt thickens more as it cools.
Store and save. Keep it in the fridge for 7 to 10 days. Set aside 2 tablespoons for your next batch.

Sustainable Yogurt Packaging

A daily yogurt habit can mean 30 or more plastic cups a month. Making yogurt at home lets you skip most of that waste.

Eco-Friendly Packaging for Yogurt

Glass jars are the best choice for sustainable yogurt packaging. Wide-mouth half-pint jars hold one serving, wash easily, and never hold onto smells or stains the way plastic can. Once the yogurt is chilled, cover each lid with a square of cotton, such as a cotton napkin or a cut piece of a cotton kitchen towel, and tie it with kitchen twine. It looks neat on a brunch tray and makes a thoughtful gift. To store or carry your jars, stand them upright in the All Cotton and Linen's reusable grocery bag. The soft cotton cushions the glass, and the bag goes with you to the farmers market again and again. Write the date on a strip of tape so you know when each jar was made.

What’s the Difference Between Greek and Regular Yogurt?

Greek yogurt is regular yogurt with most of the whey strained out. Whey is the watery part of milk. Removing it makes yogurt thicker, tangier, and higher in protein.

Feature	Regular Yogurt	Greek Yogurt
Texture	Smooth and pourable	Thick and creamy
Protein (6 oz cup)	About 8 to 10 g	About 15 to 18 g
Sugar from lactose	Higher	Lower
Calcium	Higher	Lower, since some leaves with the whey
Taste	Mild and lightly tangy	Tangier
Milk needed per cup	About 1 cup	About 2 cups
Best uses	Smoothies, baking, marinades	Dips, bowls, sauces, sour cream swaps

How to Make Greek Yogurt (In Short)

Greek yogurt needs no new recipe. Make plain yogurt using the steps above, then strain it. The longer it drains, the thicker it gets.

Set up the strainer. Line a fine mesh strainer with a clean cotton kitchen towel or a few layers of cheesecloth. Place it over a deep bowl.
Add the yogurt. Spoon 4 cups of chilled plain yogurt into the cloth.
Strain in the fridge. Cover and refrigerate. Strain for 2 hours for a thick yogurt and 4 hours for a very thick one.
Whisk and store. Stop when it holds its shape on a spoon. Scrape it into a jar and whisk until smooth. You will get about 2 cups.
Keep the whey. Use it in smoothies, pancakes, or bread dough within a week.

Is Greek Yogurt Good for You

Yes, plain Greek yogurt is a good choice for most people. It has about twice the protein of regular yogurt, which keeps you full longer, and it has less lactose sugar. Plain cups with live and active cultures also give you probiotics that support gut health. Choose plain over flavored, since flavored cups can hold several teaspoons of added sugar. Many people with lactose intolerance handle it better than milk, but start with a small serving.

Greek Yogurt Uses

Swap it for sour cream on tacos, chili, and baked potatoes.
Stir in garlic, lemon, and dill to make tzatziki.
Blend it into smoothies for extra protein.
Replace mayonnaise in chicken salad or egg salad.
Marinate chicken in it, since the lactic acid softens the meat.
Layer it with fruit and granola in jars for brunch parfaits.

Is Greek Yogurt Dairy

Yes, Greek yogurt is dairy. It is made from cow’s milk, or sometimes goat or sheep milk, that is cultured and strained. It still has milk proteins and a little lactose, so it is not safe for anyone with a milk allergy. Coconut, soy, and almond products labeled “Greek style” are plant-based and are not true Greek yogurt.

How to Make Skyr Yogurt

Skyr is a thick Icelandic cultured dairy food. It is technically a fresh cheese, but it eats like yogurt. It uses skim milk and drains longer than Greek yogurt, so it ends up with more protein and a mild, slightly sour taste. This home version turns 8 cups (half a gallon) of skim milk into about 2 to 3 cups of skyr. Your starter is 2 tablespoons of plain skyr or plain yogurt with live cultures.

Heat the milk. Warm it to 185°F and hold it there for 10 minutes, stirring now and then. The long heat gives skyr its dense body.
Cool and add the starter. Let the milk cool to 110°F. Whisk the starter with a half cup of the warm milk, then stir it into the pot. Traditional skyr also uses a few drops of liquid rennet for a firmer curd. If you use it, follow the package for a half gallon of milk.
Keep it warm. Pour the milk into clean jars or a covered pot. Hold it at 105°F to 110°F for 8 to 12 hours, until it sets.
Chill. Refrigerate for 2 hours so the curd firms up.
Strain. Line a strainer with a clean cotton cloth and set it over a bowl. Pour in the chilled skyr and refrigerate for 4 to 8 hours, until it is thicker than Greek yogurt.
Whisk and store. Whisk it smooth, spoon it into a glass jar, and use it within 7 days.

What to Do with Expired Yogurt

Check it first. Sealed yogurt that was kept cold and is only a few days past its date is often fine if it smells fresh and shows no mold. Throw it out if you see pink, orange, green, or fuzzy spots, or if it smells rotten. A little clear liquid on top is just whey. When in doubt, toss it.

Why Is My Homemade Yogurt Slimy

Slime usually comes from a starter strain that makes long, stretchy strands. It can also come from incubating too long or at too low a temperature. If the yogurt smells fine and has no mold, it is safe but may feel odd. Switch to a new starter and shorten the incubation time. If it smells off, discard it.

Can Yogurt Lower Cholesterol

Yogurt may help a little, but it is not a treatment. Some studies link yogurt with probiotic cultures to small drops in LDL, the “bad” cholesterol. The effect looks modest and varies by strain. Talk to your doctor before changing how you manage high cholesterol.

What to Do with Yogurt That’s About to Expire

Use it up or freeze it. Stir it into pancake batter, muffins, or cake for a moist crumb. Blend it into smoothies, marinate chicken in it, or whisk it with herbs for a quick dip. You can also strain it into Greek yogurt.

Can Dogs Eat Yogurt?

Yes, in small amounts. Plain, unsweetened yogurt is the safest choice. Never give yogurt that contains xylitol, which is toxic to dogs. Many dogs struggle to digest lactose, so start with a teaspoon or two and watch for gas or loose stools. Ask your vet first if your dog has health problems.

Can You Freeze Yogurt?

Yes. Yogurt is safe to freeze for 1 to 2 months. Thawing makes it grainy and watery because the proteins separate. Frozen yogurt works best in smoothies, baking, and sauces, not on its own. Freeze it in ice cube trays or in jars with an inch of space at the top so the glass does not crack.

Is Yogurt Good for Diarrhea?

Plain yogurt with live cultures may help some people, especially after antibiotics, because probiotics can restore gut balance. Choose plain and low in sugar. Skip it if milk makes your symptoms worse. See a doctor if diarrhea lasts more than 2 days or comes with fever, blood, or signs of dehydration.

Can Cats Have Yogurt?

A small lick of plain yogurt will not hurt most healthy cats, but cats do not need it. Many adult cats digest lactose poorly, and dairy can upset their stomachs. Never offer flavored yogurt or any with xylitol or sweeteners. Ask your vet before using yogurt as a treat or probiotic.

Key Takeaways

Heat milk to 180°F, cool it to 110°F, add a starter, keep it warm for 6 to 10 hours, and chill it for at least 4 hours.
Whole milk and plain yogurt with live cultures are all you need.
Greek yogurt is regular yogurt strained for 2 to 4 hours. Skyr uses skim milk and drains longer, so it is even thicker.
Glass jars covered with cotton and carried in a reusable bag cut plastic waste.
Homemade yogurt keeps for 7 to 10 days. Frozen yogurt is best used in cooking.
Dogs can have a little plain yogurt without xylitol. Cats do not need it.

FAQs

How does milk turn into yogurt?

Milk turns into yogurt when helpful bacteria ferment the milk’s natural lactose. The bacteria produce lactic acid, which thickens the milk and gives yogurt its mildly tangy taste. Warm milk and a small amount of live yogurt starter create the right conditions for fermentation.

How to make yogurt at home Indian?

To make yogurt Indian style, boil 1 liter of full fat milk and let it cool until it is warm but not hot. Stir in 1 to 2 tablespoons of plain yogurt with live cultures. Cover and keep it in a warm place for 6 to 10 hours, or until it sets. Refrigerate before serving.

What is the best way to make yogurt at home?

The easiest method is to use fresh milk and plain yogurt with live cultures as a starter. Heat the milk, cool it to a warm temperature, mix in the starter, and leave it undisturbed in a warm spot until set. Using full fat milk usually gives a thicker, creamier yogurt.

What are the main ingredients of yogurt?

The main ingredients are milk and live bacterial cultures. The cultures ferment the lactose in milk and turn it into lactic acid, which thickens the milk and creates yogurt’s familiar tangy flavor. Homemade yogurt can be made with just these two ingredients.

How can I make yogurt at home?

Start by heating milk until it reaches a gentle boil. Let it cool until comfortably warm, then mix in a spoonful of plain yogurt containing live cultures. Cover the container and keep it warm for several hours without disturbing it. Once the yogurt has set, refrigerate it for a few hours before eating.

Which fruits cannot be mixed with yogurt?

There are no common fruits that are strictly unsafe to mix with yogurt. However, very acidic fruits such as pineapple, kiwi, oranges, and lemons can sometimes make yogurt taste bitter or cause slight separation. Fresh pineapple and kiwi also contain enzymes that can affect milk proteins. For the best texture, add these fruits just before serving.