Preparing ginseng root depends on whether you’re starting with a fresh root or a dried one, and what you plan to do with it. Fresh roots need gentle washing and can go straight into soups or be sliced for tea. Dried roots require softening before you can cut them. Either way, the process is straightforward once you know the basics.
Cleaning Fresh Ginseng Root
Fresh ginseng is delicate, and aggressive scrubbing can damage the root and reduce its quality. Fill a bucket or large bowl with water, swish the roots around, and gently rub them with your fingers to loosen soil. A little dirt left in the grooves is fine and actually preferable to scrubbing the root until it’s white. If you prefer, you can lay the roots on a mesh screen and spray them lightly with a hose instead of hand washing.
Once clean, pat the roots dry. If you’re not using them right away, store fresh ginseng in the refrigerator near 0°C (32°F). Research from the Journal of Ginseng Research found that fresh roots hold their active compounds best within the first two weeks of refrigerated storage and should ideally be used or processed within four weeks. Storing fresh ginseng at around 4°C for two weeks before processing may actually concentrate some of its beneficial compounds slightly.
Slicing Dried Ginseng Root
Properly dried ginseng is rock hard and nearly impossible to cut without softening first. The easiest method is steaming. Bring two to three inches of water to a boil in a pot, set a vegetable steamer basket over the water, and place your dried roots inside. Cover and steam until the roots are soft enough to slice easily with a sharp kitchen knife. Timing depends on root size:
- Small roots: 5 to 10 minutes
- Medium roots: 15 to 20 minutes
- Large roots: 20 to 25 minutes
- Jumbo roots: 25 to 30 minutes
Once softened, remove the roots and slice them into thin rounds or half-moons, roughly 1/4 to 1/2 inch thick. These slices are ready for tea, soup, or further drying.
Making Ginseng Tea
Ginseng tea is the most common way people prepare the root at home. A good starting ratio is about 30 grams of sliced ginseng (roughly six pieces, two to three inches each) to five or six cups of water. Slice the root into thin pieces first to expose more surface area for extraction.
Bring the water to a boil, then reduce the heat to a low simmer. This part takes patience: simmer for at least one hour to draw out the active compounds. Some traditional recipes add a teaspoon of rinsed white rice, which gives the tea a slightly smoother, less bitter flavor and a subtle body. The finished tea will have an earthy, slightly sweet taste. You can drink it warm or chill it. The simmered root slices can be reused for a second, weaker batch.
For a quicker version with less intensity, steep a few thin slices in just-boiled water for 10 to 15 minutes, though this won’t extract as much as a full decoction.
Making Red Ginseng at Home
Red ginseng is simply fresh white ginseng that has been steamed and dried. The steaming process changes the root’s color to a reddish-amber and transforms its active compounds into different forms that some traditional medicine systems consider more potent.
Traditionally, fresh ginseng is steamed at 90 to 100°C (about 195 to 212°F) for two to three hours. After steaming, the root is dried slowly at a low temperature until firm. At home, you can approximate this by placing clean fresh roots in a steamer basket over boiling water for two to three hours, then drying them in an oven set to the lowest temperature (ideally around 150 to 170°F) with the door slightly cracked, or using a food dehydrator. The roots are done when they feel hard and dry throughout.
Higher steaming temperatures (around 120°C, which requires a pressure cooker) create additional transformed compounds not found in standard steaming. However, keeping temperatures at or below 105°C preserves the broadest range of the root’s original active compounds. Above that threshold, some key compounds begin to break down significantly, losing 13 to 49% of their original levels.
Cooking With Ginseng Root
Ginseng appears in a number of traditional dishes, most famously the Korean chicken soup samgyetang. To make it, a small whole chicken is stuffed with soaked glutinous rice, two fresh ginseng roots, garlic cloves, and jujube dates, then simmered in water until the chicken is fall-apart tender. The ginseng infuses the broth with a mild, earthy sweetness and softens enough to eat alongside the chicken.
Beyond soups, sliced ginseng can be added to congee, stir-fried briefly with honey as a snack, or simmered into broths and stocks. Fresh root has a milder, slightly peppery flavor compared to dried ginseng, which is more concentrated and bitter. If you’re adding ginseng to a dish that cooks for less than an hour, use thin slices to help it soften and release flavor in time.
How Much to Use
The standard daily amount for dried ginseng root is 1 to 2 grams, taken for periods of up to three months. Clinical studies have used a wider range of 0.5 to 3 grams per day. If you’re making tea with 30 grams of root and five cups of water, that full pot contains roughly 10 to 15 servings at the traditional dose, so a single cup is a reasonable portion.
Ginseng can interfere with blood clotting, which matters if you take blood thinners or are scheduled for surgery. It may also affect blood sugar levels enough to be relevant for people managing diabetes with medication. There are uncertainties about interactions with blood pressure medications, statins, and some antidepressants as well. It is not recommended during pregnancy, as one of its chemical components has caused birth defects in animal studies, and most experts advise against giving it to infants or young children.
Storing Prepared Ginseng
Dried ginseng, whether whole or sliced, keeps well for months in a cool, dry place. An airtight container stored away from heat and light is ideal. Keeping dried roots or slices below 25°C (77°F) helps preserve their active compounds over time. Brewed ginseng tea keeps in the refrigerator for three to four days. Red ginseng, because it has already been heat-processed and thoroughly dried, tends to have the longest shelf life of any form.