What Is Muña? The Andean Mint Peruvians Drink After Every Meal

Walk into almost any home in Cusco or Huancayo after lunch and you'll smell it before you see it: a sharp, minty steam rising off a mug of muña tea. Not peppermint, not spearmint, something a little more medicinal and a little more herbal, like mint crossed with oregano. Peruvians don't drink it because it's trendy. They drink it because their grandmothers did, and because a heavy plate of rice, potatoes, and meat sits a lot easier with a cup of it afterward.

Muña (Minthostachys mollis) grows wild across the Andes at altitudes most plants can't handle, typically between 2,800 and 4,000 meters. It's part of the mint family, but it evolved in thin air and cold nights, which botanists think is part of why its essential oil is so concentrated. Andean communities have used it for centuries, not just as a tea but as a companion crop planted next to potatoes to keep certain pests away, and as a folk remedy tucked into pillowcases or chewed raw on long walks at altitude.

What's actually in the cup

Muña's flavor and effects come mostly from its essential oil, which is unusually rich in pulegone and menthone, two compounds also found in pennyroyal and peppermint but in different ratios here. That's the source of the strong, almost camphor-like aroma. A single tea bag typically steeps for 5 to 7 minutes in hot water, and the color stays pale, more like green tea than black tea, even after a long steep.

Peruvian herbalists have traditionally recommended muña for three things: settling the stomach after a big meal, easing minor bloating and gas, and, at altitude, helping with the queasiness that comes with soroche (altitude sickness). If you've ever taken a tour through the Sacred Valley, there's a good chance someone handed you a cup of muña tea or coca tea within the first hour, precisely for that last reason.

What the research actually says

This is where we have to be honest: muña has real traditional use behind it, but the clinical research is thin. A handful of lab studies, mostly out of Peruvian and Bolivian universities, have looked at Minthostachys mollis essential oil and found it has measurable antimicrobial and antifungal activity in vitro, which lines up with its historical use as a natural preservative and pest deterrent for stored grains. There's also older pharmacological work suggesting the plant relaxes smooth muscle in the digestive tract, which would explain the centuries of after-meal use for bloating and cramping.

What's missing is large, well-designed human trials. Most of what we have is lab bench science, animal studies, or ethnobotanical surveys documenting what communities say the plant does. That's meaningfully different from a randomized controlled trial in people. So when we say muña "supports digestion," we mean it in the traditional-use sense, backed by preliminary lab findings, not a settled clinical fact. If you're dealing with a real digestive condition, this is a cup of tea, not a substitute for seeing a doctor.

How it compares to the mint you already know

If you've had peppermint tea, muña will feel familiar but sharper. Peppermint is gentler and sweeter; muña has more bite, closer to the intensity of oregano tea or a strong sage infusion. Some first-time drinkers find it a little medicinal-tasting at full strength, which is why a lot of households cut it with a little honey or a squeeze of lime, or blend it half-and-half with a milder herb like toronjil (lemon balm) for an easier introduction.

One genuinely useful side-by-side: peppermint tends to relax the lower esophageal sphincter, which can actually worsen acid reflux for some people. Muña hasn't been studied enough to say definitively whether it shares that effect, so if you have reflux and peppermint bothers you, treat muña with the same caution rather than assuming it's automatically safer.

How Peruvians actually drink it

The most common ritual is simple: a cup after the midday meal, the biggest meal of the day in most of Peru, rather than with breakfast or as a bedtime tea. In the highlands, it's also brewed stronger and drunk warm before or during a hike to altitude, sometimes alongside coca leaf tea. It's rarely sweetened heavily; a little honey is more typical than sugar. And unlike some Peruvian herbal teas that are steeped for a specific medicinal window, muña is closer to an everyday habit than a remedy you reach for only when something's wrong.

A few honest cautions

Muña's essential oil is potent, and pulegone specifically has a track record of causing problems in concentrated doses (this is the same compound that makes pennyroyal oil dangerous when ingested undiluted). Drinking muña as a normal cup of tea, brewed from dried leaf rather than concentrated oil, is a different situation entirely and is how it has been consumed safely for generations. Still, it's not recommended in concentrated or essential-oil form, and pregnant women should avoid it altogether, since pulegone-containing plants have a documented history of use as uterine stimulants in folk medicine. If you're on medication for blood pressure or take muscle relaxants, mention your tea habits to your doctor, since interactions haven't been well studied.

As always, this is one traditional plant among many that Peruvian households keep on hand, not a cure for anything. If you're curious whether it fits your after-meal routine, it's a low-stakes, inexpensive way to try a genuinely different flavor and a genuinely old tradition at the same time.

Looking to build out a full after-meal tea routine? Pair muña with Boldo Tea for liver and digestive support, or browse our full digestive health collection for more traditional Peruvian options.

*These statements have not been evaluated by the FDA. Muña Tea is not intended to diagnose, treat, cure, or prevent any disease.