A Little Tingle: Clove, Kava, and the Plants That Numb
Société Team
Bite into a whole clove hiding in your cider and you’ll remember it. First comes the spice: warm, woody, unmistakable. Then a small patch of your tongue goes numb. Sichuan peppercorns bring a different surprise—a sparkling buzz that lingers between bites. Kava can leave the lips tingling after the first sip. A little garden flower called a buzz button earns its name almost immediately. These plants do more than add flavor. Their compounds change how the mouth feels, creating sensations that range from warmth and numbness to an almost electric hum. Behind each one is a story of kitchens, gardens, ceremony, and traditional medicine. Clove: a small bud with a long history Clove is the dried flower bud of Syzygium aromaticum , an evergreen native to Indonesia’s Maluku Islands. Harvested before the flowers open, the buds dry into the familiar brown spice tucked into oranges, simmered in cider, and baked into gingerbread. For such a small thing, clove has traveled far. It was once a fiercely valuable commodity, carried along trade routes and caught up in the struggle to control the spice trade. Today, a jar sits quietly in the cupboard. Its scent is familiar enough to feel like a memory: holiday baking, a pot on the stove, perhaps even an old-fashioned dentist’s office. The compound behind the numbness Much of clove’s distinctive scent—and its local anesthetic effect—comes from eugenol. This compound can temporarily reduce sensation, which helps explain clove’s long association with toothache relief. That history needs a little care in the telling. Concentrated clove oil can irritate or damage the tissues of the mouth, and repeated application can harm the gums. It deserves more precise guidance than a homemade dilution and a cotton swab. If you’re considering a dental product containing clove oil, ask a dentist or pharmacist and follow its label. Clove oil product information Clove in the kitchen The simplest way to enjoy clove is also one of the loveliest: as a spice. Let a couple of whole cloves steep in a pot of chai or mulled cider, then strain them out before serving. Add a small pinch of ground clove to gingerbread, poached pears, or a spice cake. Simmer whole cloves in broth when you want a deeper warmth. Use a light hand. Clove can fill a kitchen with fragrance—and take over a recipe just as easily. Kava: a pepper with a different purpose Kava is a pepper, though you won’t find it beside the salt shaker. Its botanical name is Piper methysticum , and it belongs to the same genus as black pepper. Instead of peppercorns, it is the plant’s underground parts that have traditionally been prepared as a drink. Across Pacific communities, including those in Vanuatu, Fiji, Tonga, Samoa, and Hawaiʻi, kava has distinct cultural roles and preparation traditions. It may accompany ceremony, hospitality, conversation, or the gathering of people at the end of a day. In many traditional preparations, the plant material is pounded or ground, worked through water, and strained into a cloudy, earthy drink. The bowl carries a social history as well as a botanical one. The first sensation Kava can produce a tingling or numb feeling in the mouth. Its characteristic compounds are called kavalactones, and its effects extend beyond that first sensation. People may describe relaxation, but the experience varies with the preparation, amount, and individual. The original promise of calm without fogginess is too simple: kava can also cause dizziness and other adverse effects. NIH overview of kava A tradition that deserves careful attention Kava’s long history does not make every product or pattern of use safe. Kava products have been linked to rare but serious liver injury, including some prepared with water. Choosing a root-based product or using it only occasionally does not eliminate that concern. Avoid combining kava with alcohol or other sedating substances. If you take medication, discuss possible interactions with a healthcare professional before use. Kava should also be avoided during pregnancy or breastfeeding, and people with liver conditions should seek medical guidance. Kava safety guidance Understanding the plant means making room for both its cultural importance and its risks. Sichuan peppercorn: the spice that buzzes Sichuan peppercorn is another kind of “pepper” altogether. It comes from Zanthoxylum , a group of plants in the citrus family, and the fragrant husk is the part prized in cooking. Crush a little between your fingers and the scent rises quickly: citrus, wood, and a bright floral edge. In Sichuan cooking, it contributes má , the numbing sensation in málà . Chili supplies the heat; Sichuan peppercorn supplies the tingle. The compound most associated with that sensation is hydroxy-alpha-sanshool. The experience is distinctive: a lively, buzzing feeling that can make the lips and tongue seem to fizz. This is a spice that invites experimentation. Gently toast the husks in a dry pan, grind them, and add a small amount to noodles, roasted vegetables, or a fragrant finishing salt. Even a little can change the experience of a dish. Start lightly. Give the flavor—and the feeling—a moment to arrive. Spilanthes: a flower with a surprise Then there is the garden’s contribution: Acmella oleracea , commonly called spilanthes, the toothache plant, or buzz buttons. Its compact yellow flower heads, often marked with a reddish center, look almost like tiny buttons on stems. They contain spilanthol, one of the plant’s characteristic compounds. Research on Acmella compounds The flowers are known for a fast tingle and a mouth-watering sensation. That unusual effect has made them a curiosity in gardens and an ingredient in some culinary traditions. The name “toothache plant,” however, shouldn’t be read as a treatment recommendation. A plant’s traditional use and its ability to change sensation do not establish that it can safely treat a dental problem. For a warm-season container garden, it offers plenty of interest before anyone tastes a thing. Four plants, four sensations | Plant | Part featured | Key compound or group | Characteristic sensation | |---|---|---|---| | Clove | Dried flower bud | Eugenol | Warming spice; localized numbness | | Kava | Traditionally, underground parts | Kavalactones | Tingling or numbness in the mouth | | Sichuan peppercorn | Fruit husk | Hydroxy-alpha-sanshool | Bright, buzzing tingle | | Spilanthes | Flower head | Spilanthol | Quick tingle and increased saliva | The sensations overlap, but the plants are not interchangeable. A culinary spice, a concentrated essential oil, and a preparation with effects throughout the body each call for different care. A little care goes a long way Enjoying these plants begins with understanding the preparation in front of you. Clove in a cake is very different from clove essential oil. Concentrated eugenol oil can be poisonous if swallowed in significant amounts, especially by children, so store it securely. MedlinePlus guidance on eugenol oil With unfamiliar culinary ingredients, use modest amounts and pay attention to irritation or allergic reactions. Avoid assuming that a plant is gentle simply because it grows in a garden. And remember that numbing does not resolve the cause of pain. A toothache needs dental attention, even if the discomfort temporarily fades. More than flavor We tend to describe food through taste: sweet, sour, bitter, salty. These plants remind us how much else happens in a mouthful. There is the warmth of clove, the citrus lift and lingering buzz of Sichuan peppercorn, the startling tingle of a small yellow flower. Each adds a different texture to the experience of eating and drinking. The next time you simmer cloves in cider or scatter Sichuan pepper over dinner, pause for a moment. Notice the fragrance first, then the flavor, then what lingers. Sometimes the most interesting part of a plant is the feeling it leaves behind. This post is for educational purposes and is not intended to diagnose, treat, cure, or prevent disease. Consult a qualified healthcare professional before using herbal products medicinally, especially during pregnancy or breastfeeding, when taking medication, or when managing a health condition. xo, Société