Traditional Yogurt Instructions - Cultures For Health

Everything you need to make rich, creamy, and delicious traditional yogurt at home. Simple, wholesome, and satisfying — no experience needed.

⏱ ~20 min hands-on🥓 Ready overnight

🥛Milk check — before you start Use pasteurized whole milk. Skip anything labeled "ultra-pasteurized" or "UHT" — it won't set properly. And don't use raw milk for your first (activation) batch: the unknown bacteria in raw milk can keep the culture from fermenting.

Before you start

Grab these first

ONE starter packet 1 PACKET = 1 BATCHUse one whole packet for your first batch. Store extra packets in the freezer — each packet makes up to 4 batches when you re-culture.

1–2 quarts pasteurized whole milk No ultra-pasteurized/UHT, and no raw milk for the first batch.

A stainless steel or enamel pot Or a double boiler

A thermometer The only tool that really matters here

A glass or plastic container with a lid

A yogurt maker — or anything that steadily holds 105–112°F Instant Pot on the Yogurt setting, or your oven with the light on

Something to stir with

Everything you need: yogurt maker, Traditional Yogurt starter packet, thermometer, saucepan and whisk, measuring cups, and a glass mason jar

60 seconds

See it before you start

Two temperatures, one packet, one overnight wait — that's the entire recipe.

180°FHeat to (stir now and then) → cool → 115°FAdd starter at

The steps

Your first batch — and every one after

STEP 1

Warm it up

Slowly heat 1–2 quarts of pasteurized whole milk to 180°F, stirring occasionally so the milk at the bottom of the pot doesn't scald. Then let it cool back down to 115°F — let the thermometer do the thinking.

A dial thermometer checking the temperature of milk heating in a saucepan on the stovetop

STEP 2

Pour, then add your starter

Pour the cooled milk into your glass or plastic container, then stir in 1 packet of yogurt starter, mixing thoroughly so it fully dissolves.

Adding the traditional yogurt starter culture to the cooled milk

STEP 3

Keep it cozy

Cover it and culture at 105–112°F for about 8 hours in your yogurt maker (or Instant Pot on Yogurt). Cooler than that and the yogurt takes much longer to set. Now walk away — this part is 100% hands-off.

A jar of culturing yogurt inside a yogurt maker, its display reading 110 degrees Fahrenheit

STEP 4

Check at 8 hours — the tilt test

Tilt the jar gently. If the yogurt pulls away from the side in one mass instead of running up the side, it's finished culturing. Not quite there? No problem — give it a little longer, checking every hour or two.

The tilt test: set yogurt holding together in one mass as the jar tips

STEP 5

Cool, then chill

Once it's set, cover it and let it cool at room temperature for 2 hours. Then refrigerate for at least 6 hours before eating. Chilling is what makes it thick and scoopable.

Jar of finished yogurt going into the refrigerator to chill

OPTIONAL

Want it even thicker?

After chilling, spoon your yogurt into a yogurt strainer (or a cloth-lined strainer) in the fridge for a few hours. Draining the extra whey gives you a thicker, Greek-style yogurt.

DON'T SKIP THIS

Save 2 Tbsp — make up to 4 batches

Before you dig in, scoop 2 Tbsp into a small container and stash it in the fridge. That's your starter for the next batch — each packet re-cultures for up to 4 batches before the strain fades and it's time for a fresh packet.

GOOD TO KNOW

First batch a little thin?

Totally normal — the activation batch is finding its feet. Use 2 Tbsp of it to start batch two anyway and you'll see a real improvement. Nobody's first batch is their best batch.

But look for a change in the milk's texture. Even a thin first batch should show some sign the culture is waking up — a film pulling away from the side of the jar, a bit of gel in the milk, or a layer of clear whey on top. Any of those means it's activating, and batch two will be stronger.

No change at all? If the milk looks exactly like milk — no film, no gel, no whey — start over with the same steps but use less milk this time (1–2 cups). A smaller first batch is more concentrated and much more likely to take.

STEP 1

Same warm-up

Heat 1–2 quarts of pasteurized whole milk to 180°F, stirring occasionally so the bottom doesn't scald. Cool to 115°F.

STEP 2

Stir in your saved yogurt

2 Tbsp per quart of milk, mixed thoroughly.

STEP 3

Keep it cozy

Culture at 105–112°F for about 8 hours.

STEP 4

The tilt test

Moves away from the jar wall in one mass? Done.

STEP 5

Chill, save, repeat

Cool 2 hours, then refrigerate at least 6 hours. Save 2 Tbsp for the next batch — up to 4 batches per packet. Want it thicker? Strain it (see the optional step).

Don't panic

Is this normal?

Almost always: yes. Tap your question.

My first batch didn't set / is thin

Completely normal for an activation batch — it's still waking up. Look for some change in the milk's texture, though: a film pulling from the side of the jar, a bit of gel, or a layer of clear whey on top all mean the culture is activating. Use 2 Tbsp of it to start batch two and the improvement is dramatic. If there's no change at all — the milk still looks just like milk — start over with the same steps but use less milk (1–2 cups) for a more concentrated batch.

How do I get it thicker?

Strain it — a few hours in a yogurt strainer (or cloth-lined strainer) in the fridge. See the optional step above.

There's yellowish liquid on top

That's whey — harmless and normal. Stir it back in, or pour it off for extra-thick yogurt.

It smells tangy — is that right?

Pleasantly tangy is exactly the goal — traditional yogurt has a mild, mellow tartness. Off, spoiled, or fizzy is not — when in doubt, email us a photo.

Can I use my Instant Pot or oven instead?

Yes — anything that steadily holds 105–112°F works. The Instant Pot's Yogurt setting is made for this; an oven with just the light on can work too (check it with your thermometer).

How many batches will one packet make? How long does it keep?

Each packet re-cultures for up to 4 batches (1 quart per batch). The finished yogurt keeps about 1–2 weeks in the fridge; start your next batch within about 7 days for the liveliest results.

Was this helpful?

From now on

Your yogurt makes yogurt

Save 2 Tbsp from each batch to culture the next one — one quart of milk in, one quart of yogurt out. Each packet keeps going for up to 4 batches before it's time for a fresh one.

ONE PACKET, UP TO 4 BATCHES.

Stuck? Ask a real person.

We've helped millions of first-timers make their first batch. Email a photo of your jar to info@culturesforhealth.com and we'll tell you what's going on.

✉️ Email us

We usually reply within a few hours

Batch one done?