Anise vs. Fennel: Which After-Meal Tea Fits You?

Anise and fennel taste almost the same.

Most people assume they are the same plant. They are not even related. Pimpinella anisum (anise) and Foeniculum vulgare (fennel) come from two different plant families that just happen to share the same flavor compound, anethole, the thing that gives both of them that black-licorice bite. Walk into a Lima bodega and you will usually find both jars sitting near the register, sold loose by the ounce as after-meal digestivos. Knowing which one to reach for actually matters.

Two seeds, one confusing shelf

Anise seed is small, ridged, and grayish-brown, and it grows on a slender annual plant native to the eastern Mediterranean and parts of Asia. Fennel seed is larger, greener, and slightly curved, and the plant itself is a tall, feathery perennial that also gets eaten as a vegetable bulb in some cuisines. Neither one is native to Peru. Both arrived generations ago and settled into the same role: the tea you drink when dinner sat a little heavy.

Side by side, fennel seed usually smells a touch sweeter and more floral. Anise leans sharper, closer to actual licorice candy. If you have ever mixed up the two jars in your kitchen, you are not alone. Even some spice blends list them interchangeably, which is not quite right.

What tradition says about each

In Peruvian households, anise tea shows up most after a big Sunday lunch, brewed strong and sipped slowly while the table gets cleared. Fennel tends to appear more with new mothers and with babies, since older generations passed it down as a gentle option for a fussy stomach. Neither use is a medical claim. It is simply what families have reached for, cup after cup, for a long time.

What the research actually shows

Fennel has the deeper recent research trail. A 2024 clinical study found that a fennel and turmeric combination eased pain and bloating across different types of IBS, and separate lab work published in late 2025 showed a fennel-containing prebiotic blend reduced gut inflammation and helped restore a healthier balance of gut bacteria in an animal model. Older research, including a 2016 trial, also linked fennel extract to less bloating and gas after meals.

Anise has a longer history than a deep modern research pile. Traditional use leans toward easing indigestion and, in some cultures, supporting milk supply in nursing mothers. Some small studies back the digestive angle, but the evidence base is thinner and older than fennel's. Neither seed is a treatment for a digestive condition. Think of both as a mild, traditional after-dinner habit, not a substitute for seeing a doctor about ongoing stomach pain.

So which one fits you?

• Reach for fennel if bloating and gas are your main complaint, or if you want the seed with more current clinical interest behind it.
• Reach for anise if you want a stronger, sweeter after-dinner cup, closer to a dessert tea than a remedy.
• Nursing? Anise is the more traditional pick, but talk to your doctor before leaning on any herb for milk supply.
• Can't decide? Many Peruvian households just keep both jars and switch depending on the meal.

How to brew either one

1. Use about 1 teaspoon of seeds, or one tea bag, per 8 ounces of water.
2. Bring the water to a full boil, then pour it over the seeds.
3. Cover and steep for 8 to 10 minutes. Crushing the seeds lightly first releases more flavor.
4. Strain and drink warm, ideally within 30 minutes of finishing a meal.

Both seeds hold up to a second steep if you want a lighter second cup. A thin slice of ginger dropped in the pot works well with either one.

Cautions

• Anise contains natural plant estrogens. Skip it if you have a hormone-sensitive condition, unless your doctor says it is fine.
• Fennel can interact with certain medications, including some blood thinners and estrogen-based drugs. Check with a pharmacist if you take either.
• Both seeds are in the same plant family as celery and carrots. If you have an allergy to that family, patch-test with a small amount first.
• Pregnant or breastfeeding? Talk to your doctor before drinking either tea regularly.

We carry both in our digestive health collection, alongside other traditional Peruvian after-meal teas in our full herbal tea collection.

The honest bottom line

Neither seed is a miracle fix, and the research on both is still early, especially for anise. What they offer is a low-key, centuries-old habit: something warm after a meal that most people find genuinely soothing. Pick the one that matches your taste, or keep both jars by the stove like half of Lima already does.

These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for education and is not medical advice.