Step into a centuries-old Korean brewing ritual with Cortex Ulmus (Slippery Elm)—a warming, earthy decoction that fills your kitchen with a soft, woodsy aroma and rewards you with a smooth, gently sweet cup that coats the throat like liquid silk. This 4oz package of pure Korean slippery elm bark brings a rare tea tradition straight from its source into your daily routine.
Known in Korea as 느릅나무 껍질, Cortex Ulmus has been simmered into soothing teas across Korea and Asia for generations. When slowly decocted, the bark releases a mellow, slightly mineral flavor with subtle honeyed undertones and a distinctively silky, almost velvety mouthfeel—the kind of cup you instinctively wrap your hands around. The brew pours a warm amber-gold and carries the comforting scent of fresh woodland bark, making each sip feel grounding and restorative.
What a Daily Cup Offers:

Respiratory Comfort — A warm cup traditionally enjoyed to calm nagging coughs, soothe scratchy throats, and support easy breathing
Digestive Ease — Sipped slowly to settle heartburn, encourage smooth digestion, and comfort a sensitive stomach
Sinus & Seasonal Clarity — A time-honored brew for clearer sinuses and relief from stuffy-season discomfort
Skin Wellness — Traditionally enjoyed to support the body's natural response to skin irritation
Urinary System Support — A gentle daily tea valued for easing urinary discomfort
Phlegm Relief — Known to support the body's natural clearing of respiratory congestion

Sourced directly from South Korea—the homeland of this tradition—our Cortex Ulmus is harvested and sun-dried with care to preserve its full character and potency. South Korea's strict quality standards and our GMP-certified production mean you're brewing authentic, whole bark with no fillers or shortcuts—something rarely available in the United States, where this level of quality is nearly impossible to find at local shops or from other sellers. To brew: simmer 20g in 1 liter of water over medium heat for about an hour, then pour 2–3 warm cups throughout the day (refrigerate the rest between servings). Put the kettle on, settle in, and let this rare Korean tea become the quiet, nourishing highlight of your daily ritual.