What Is a Sour Mead — And Why Do Sour Meads Taste So Good?

If you've wandered into our tasting room and asked the person behind the bar for "something different," there's a good chance a glass of Razzputin or Black Madonna ended up in your hand. One sip and the question comes almost every time: "Wait — is this a mead? It's so tart. How did you do that?"

Great question. Let's pull back the curtain on one of the most fun things we make here at St. Ambrose Cellars: sour mead.

First, a quick refresher: what is mead?

Mead is one of the oldest fermented drinks in the world — honey wine, plain and simple. You take honey, add water, add yeast, and the yeast converts the sugars in the honey into alcohol. Add fruit and you get a melomel. Add apples and you get a cyser. Mead is a wonderfully flexible canvas, and the flavor can run anywhere from bone-dry to lusciously sweet.

Everything we ferment starts with real honey from our sister company, Sleeping Bear Farms — family beekeepers who've been working hives in Michigan and Florida for over 45 years. Good honey is the foundation of good mead, and having our own beekeepers a stone's throw away means we know exactly what's going into every batch.

So that's regular mead. Now let's make it sour.

Our first sour mead was a complete accident

Here's the truth: we didn't set out to make a sour mead. We stumbled into it.

Years ago we had a raspberry mead fermenting away, and something strange started happening. The fermentation slowed down. Not stalled, not stuck — just... slowed. In winemaking, that's usually the moment you start to worry.

So we tasted it. And it was good.

We tasted it again a few days later. It was better.

And again. Better still. Something was going on in that tank that we hadn't planned and didn't fully understand yet — the mead was picking up a bright, clean tartness that lifted the raspberry right off the palate.

We liked it enough to enter that raspberry mead in the Mazer Cup International in Boulder, Colorado — the largest mead competition in the world.

It won gold.

That was our accidental introduction to sour mead, and we never looked back. What we eventually understood was that Lactobacillus had found its way into the must and gone quietly to work, producing lactic acid alongside the yeast. The happy accident had a name — and once we knew what it was, we could do it on purpose.

What makes a mead "sour"?

A traditional mead gets its character from yeast alone. A sour mead invites a second guest to the party: friendly, souring bacteria — specifically Lactobacillus, the same family of bacteria behind yogurt, sourdough bread, sauerkraut, and traditional sour beers.

The difference between that first accidental batch and what we make today is control. Instead of waiting for wild bacteria to wander in, we now use a deliberate lacto inoculation — a measured dose of Lactobacillus culture pitched into the honey must. As that culture goes to work, it produces lactic acid. Lactic acid is soft, clean, and bright — it's the "tang" in Greek yogurt, not the harsh bite of vinegar. That gentle acidity is exactly what gives a sour mead its signature pucker.

Same magic. We just stopped leaving it up to chance.

The result is a drink that's tart, refreshing, lightly effervescent, and endlessly crushable — what we call a "session" sour mead. It's very much a cousin of the sour beers that have been brewed in parts of Europe for centuries and have exploded in popularity in the craft world lately.

Why do sour meads taste so good?

There's actually some real sensory science behind why that tart-sweet combination is so irresistible:

• Acidity balances sweetness. Honey and fruit bring a lot of natural sugar to the table. Left alone, that can feel heavy or cloying. Lactic acid cuts right through it, so instead of "sweet," you get "bright." The two play off each other the way lemon plays off sugar in lemonade.

• Sourness makes your mouth water — literally. Tart flavors trigger salivation, which is why a sour drink feels so refreshing and makes you want another sip. It's the same reason a squeeze of lime wakes up a dish.

• Fruit shines brighter in an acidic environment. A little acidity lifts and sharpens fruit flavor, so the raspberry or blackberry reads as vivid and fresh rather than jammy.

• It's light and drinkable. Our sour draft meads land around 6.5–6.9% ABV — closer to a strong beer than a big still mead. That makes them perfect for a warm afternoon on the patio or the disc golf course out back.

Meet our sour meads

We've built a whole sour draft mead series around this technique. Two fan favorites:

Razzputin

Our tart raspberry sorcerer. Bright, puckering sour raspberry over a honey backbone, full of "wizardry and wonder." At 6.5% ABV and gluten-free, it's a go-to summer refresher that casts a sour spell on your tastebuds. Try it alongside fresh, popping flavors — a crisp salad or spicy shrimp tacos.

Black Madonna

Deep in the halls of St. Ambrose, our mazers tend a divine sour culture to produce this one. Bold, dark, and unapologetically rich, Black Madonna pairs tart blackberry with that same clean lactic tang for a mead that's strikingly smooth. At 6.9% ABV and gluten-free, it's one of our most popular meads to mix — try a 50/50 pour with our John Lemon for something wild.

Both meads owe their soul to three things: that lacto inoculation, the exceptional honey that makes the whole thing possible — and one raspberry mead, years ago, that decided to do its own thing.

Come taste the sour side

The best way to understand a sour mead is to drink one. Stop by the St. Ambrose Cellars tasting room in Beulah, Michigan, pull up a chair, and let us pour you a flight. Whether you're a sour skeptic or a full-blown sour fanatic, we'll find your glass.

Some of the best things we make, we set out to make. And some of them just happened — we were only smart enough to pay attention. 🍯

St. Ambrose Cellars • Beulah, Michigan • Crafted with honey from Sleeping Bear Farms