How to Brew Rosemary Tea (Romero), Peru's Kitchen Ritual

In a Peruvian kitchen, rosemary rarely waits for a recipe. It gets pulled off the stem, tossed into a roast, and just as often steeped straight into a cup of hot water when someone's stomach feels heavy after dinner.

Most people know rosemary as the spice that goes on chicken or potatoes. Fewer know it also has a long life as a tea, one that Peruvian households lean on for digestion long after the roast pan is washed.

What Rosemary Actually Is

Salvia rosmarinus, still commonly labeled by its older name Rosmarinus officinalis, is native to the Mediterranean coast, not the Andes or the Amazon. Spanish colonization brought it to Peru centuries ago, and it settled into local kitchens the way a handful of other adopted herbs did, planted in courtyard gardens and passed between neighbors until it stopped feeling foreign at all.

The plant carries two compounds researchers keep coming back to: rosmarinic acid and carnosic acid. Both are antioxidants, and both show up in the handful of studies on rosemary's effect on digestion and inflammation. A 2024 review in a pharmacology journal looked specifically at rosemary's role in gut motility and found real mechanisms behind the traditional claim that it settles a heavy stomach, though the authors were careful to note the pharmacological evidence is still limited and more human trials are needed.

How to Brew It

Rosemary tea is forgiving. It does not need a specific water temperature or a timer set to the second, but a few details make the difference between a cup that tastes like pine needles and one that tastes like something you would actually want twice.

• Use about one teaspoon of dried rosemary leaves per cup of water
• Bring water just off a full boil, not a hard rolling boil, which can scorch the leaves and turn the tea bitter
• Pour over the leaves and cover the cup while it steeps, so the aromatic oils stay in the water instead of escaping as steam
• Steep for 5 to 7 minutes, then strain
• A squeeze of lemon cuts the bitterness if the flavor is too sharp on its own

If the tea still tastes too strong, use less rosemary rather than steeping for less time. A short steep with too many leaves still pulls out the bitter compounds early.

When Peruvian Households Reach for It

Rosemary shows up most in the hours after a big meal, particularly one built around grilled or roasted meat, a tradition close to the heart of Peruvian home cooking. The same plant that seasoned the roast gets steeped afterward, a habit less about ceremony and more about practicality: the herb was already on the counter.

Some households also keep a small jar of dried rosemary next to the stove specifically for tea, separate from the cooking supply, since a good tea leaf is picked a little differently than a good roasting sprig. Either works, but a dedicated loose-leaf tea gives a cleaner flavor with less woody stem in the cup.

What Else the Research Says

Beyond digestion, rosemary has drawn interest for its effect on memory and the nervous system. A review published in the National Institutes of Health's research archive covered several small studies on rosemary's compounds and cognitive markers, with early results described as promising but preliminary. None of this makes rosemary tea a treatment for any condition. It is a mild, well-tolerated plant with a long tradition behind it and a growing but still incomplete body of research in front of it.

A Few Cautions

• Rosemary in concentrated or medicinal doses can stimulate uterine contractions, so pregnant readers should stick to culinary amounts, if any, and check with a doctor first
• It may lower blood sugar slightly, which matters for anyone on diabetes medication
• Rosemary can interact with blood thinners and some blood pressure medications, so talk to a doctor before making it a daily habit if you take either
• Rosemary essential oil is a different, far more concentrated product and is not meant for drinking

A cup of rosemary tea after dinner is a small, low-risk habit for most healthy adults. It just is not a substitute for medical care if digestion problems are frequent or severe.

Keep It Simple

Rosemary tea does not need to be fancy to work. One teaspoon of leaves, water just off the boil, a covered cup, and five minutes is the whole method, the same one that has been quietly working in Peruvian kitchens for generations. You can find loose-leaf rosemary in our herbal teas collection, alongside more options in our digestive health collection.

This article is for educational purposes only and has not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease. Talk to your doctor before trying a new herbal tea if you are pregnant, nursing, taking medication, or managing a chronic health condition.