Cardamom is used as a cooking spice, a traditional digestive remedy, a breath freshener, and a fragrance ingredient. It’s one of the most expensive spices in the world by weight, and its uses stretch far beyond flavoring chai tea. Two main varieties exist, green and black, each suited to different purposes in the kitchen and beyond.
Green vs. Black Cardamom in Cooking
Green cardamom, sometimes called true cardamom, has a sweet, slightly pungent flavor with notes of eucalyptus. It works in both sweet and savory dishes: Indian desserts, Scandinavian pastries, rice pilafs, and especially masala chai. The pods are harvested before they fully mature, which preserves that bright, aromatic quality.
Black cardamom is a different plant entirely. Its pods are harvested at full maturity and smoked, giving them a bold, campfire-like flavor with cooling menthol undertones. You’ll find it in hearty curries, stews, and spice blends where that smokiness can stand up to rich, slow-cooked dishes. It rarely shows up in desserts.
Both belong to the ginger family, but they aren’t interchangeable. Swapping one for the other in a recipe will noticeably change the result.
Digestive Support
Cardamom’s oldest and most widespread use is for settling the stomach. In Ayurvedic medicine, it has been used for thousands of years to relieve bloating, gas, and general digestive discomfort. Practitioners consider it a warming spice that helps the body break down food more efficiently. Chewing on a pod after a heavy meal is a common practice across South Asia and the Middle East.
Lab research supports some of these traditional claims. Cardamom extract has a dual effect on the gut: it can stimulate intestinal movement through one pathway while also relaxing intestinal spasms through another, acting as a kind of calcium channel blocker similar in mechanism to certain antispasmodic medications. This two-way action may explain why it seems to help with both sluggish digestion and cramping. A small study in pregnant women found that 1.5 grams per day improved gastrointestinal discomfort in the short term, though more research on safety during pregnancy is still needed.
Blood Sugar and Cholesterol
Cardamom shows promising effects on several markers of metabolic health. In a clinical trial with overweight and obese people who had type 2 diabetes, taking 3 grams of cardamom daily for 10 weeks lowered a key measure of long-term blood sugar control from 8.19% to 7.71%. Insulin resistance also dropped significantly, and triglyceride levels fell from 158 to 126 mg/dL.
A separate trial focused on overweight prediabetic women found that 3 grams daily for two months reduced total cholesterol from about 193 to 184 mg/dL and LDL (“bad”) cholesterol from 118 to 111 mg/dL, while slightly improving insulin sensitivity. These aren’t dramatic shifts on their own, but they’re meaningful for a kitchen spice used alongside other dietary changes. Most studies have used doses of 1.5 to 3 grams per day, which translates to roughly half a teaspoon to a full teaspoon of ground cardamom.
Blood Pressure
A meta-analysis of randomized clinical trials found that cardamom consumption lowered diastolic blood pressure (the bottom number) by about 0.9 mmHg and systolic blood pressure (the top number) by about 0.5 mmHg on average. Those numbers are modest across the pooled data, but individual trials have shown stronger effects. In people with stage 1 hypertension specifically, 3 grams of cardamom powder daily for three months produced significant reductions in both systolic and diastolic readings. The blood pressure effect likely comes from a combination of the spice’s ability to relax blood vessels and its mild diuretic properties.
Oral Health and Breath Freshening
Chewing cardamom pods to freshen breath is a tradition in many cultures, and the science behind it goes beyond just masking odor. Cardamom essential oil contains compounds that actively fight bacteria in the mouth. The two dominant compounds, alpha-terpinyl acetate (38.4% of the oil) and 1,8-cineole (28.7%), have demonstrated antimicrobial activity against several pathogens, including Streptococcus mutans, the primary bacterium responsible for tooth decay. In lab testing, cardamom oil also inhibited Candida albicans, a fungus that causes oral thrush. The oil was more effective against these oral pathogens than against other tested bacteria, which may explain why the mouth is precisely where traditional use has concentrated.
Respiratory Relief
Cardamom’s warming, slightly cooling vapor has made it a go-to remedy for colds, coughs, and congestion in traditional medicine systems. Its essential oil is rich in 1,8-cineole, the same compound found in eucalyptus oil, which helps loosen mucus and open airways. In Ayurvedic practice, inhaling steam from cardamom-infused water or mixing the powder with honey is recommended for respiratory congestion. Cardamom tea is also traditionally used to help relax the airways in people with asthma, though clinical evidence for this specific use remains limited.
Fragrance and Aromatherapy
Green cardamom essential oil is prized in the fragrance industry for its complex, warm-spicy aroma. The oil is dominated by oxygenated monoterpenes, which make up over 71% of its composition. That characteristic cardamom scent comes from the interplay of 1,8-cineole (55.4% in green cardamom oil) and alpha-terpinyl acetate (28.6%). Perfumers use cardamom as a middle note in fragrances, where it bridges fresh citrus top notes and deeper woody or musky base notes. It appears in many men’s colognes and unisex fragrances, often paired with bergamot, sandalwood, or amber.
Black cardamom oil has a different chemical profile, with more geraniol (12.5%) contributing a rosy-floral dimension alongside the shared cineole base. Ethiopian cardamom, a third variety, leans more heavily on cineole (51.8%) with less of the sweet acetate, giving it a sharper, more medicinal character.
How Much Is Typical
The average daily intake of cardamom through normal cooking is estimated at about 55 milligrams. Clinical studies that found health benefits used substantially more, typically 1.5 to 3 grams per day (roughly 27 to 55 times the average dietary amount). That’s achievable if you’re deliberately adding cardamom to tea, smoothies, oatmeal, and cooking throughout the day, but it’s well above what most people consume from the occasional curry or baked good.
Cardamom contains compounds that could theoretically stimulate bile production, so people with gallstones should be cautious with supplemental doses. Safety data during pregnancy is thin. One study used 1.5 grams daily without reported problems, but researchers noted the need for more evaluation before recommending it broadly for pregnant women. At culinary amounts, cardamom has no known safety concerns for the general population.