Yacon is most commonly eaten raw, peeled and sliced like an apple or jicama. The root has a crisp, juicy texture and a mild sweetness often compared to a cross between a watermelon and a pear. But raw slices are just the starting point. You can also bake it into chips, stir it into salads, blend it into smoothies, drink tea from its leaves, or use yacon syrup as a honey-like sweetener.
Peeling and Eating Yacon Raw
Start by peeling the root with a vegetable peeler or paring knife. The skin is thin and papery, similar to a sweet potato’s. Underneath, the flesh is translucent and pale, almost like a water chestnut. Once peeled, slice it into rounds, sticks, or cubes. You can eat it immediately, and most people prefer it this way: cold, crisp, and uncooked.
Yacon browns quickly after peeling, just like an apple. To keep slices looking fresh, drop them into a bowl of water with a squeeze of lemon juice while you work. A more effective option is dissolving a crushed 500-mg vitamin C tablet in a quart of cold water and soaking the pieces for about 10 minutes. This stops the browning reaction without affecting flavor.
Raw yacon works well in fruit salads, slaws, and anywhere you’d use jicama or Asian pear. Its neutral sweetness pairs naturally with citrus dressings, chili-lime seasoning, or a simple drizzle of honey.
Curing for Extra Sweetness
Freshly harvested yacon is mildly sweet, but you can intensify that sweetness significantly by “curing” the roots in the sun for one to two weeks, similar to how sweet potatoes are treated after harvest. During curing, enzymes inside the root convert its indigestible sugars (called fructooligosaccharides) into fructose, glucose, and sucrose. The result is a noticeably sweeter root.
There’s a trade-off, though. Curing increases sweetness but reduces the signature crispness. It also shifts the sugar profile toward the kinds of simple sugars that raise blood sugar, which matters if you’re eating yacon specifically for its low glycemic properties. If you want both the crunch and the prebiotic benefits, eat it fresh rather than cured.
Cooking With Yacon
While raw is the most popular way to enjoy yacon, heat opens up other possibilities. Baked yacon chips are one of the simplest cooked preparations: slice the peeled root thinly, spread the slices on a baking sheet, and bake at a low temperature until they’re lightly golden and crisp at the edges. The heat concentrates the sweetness, producing something like a mildly sweet vegetable chip.
You can also add yacon to curries and stews, where it softens but holds its shape reasonably well, contributing a subtle sweetness to the broth. Some cooks have experimented with making a yacon “applesauce” by simmering and mashing it, though the flavor is distinct from apple and takes some getting used to. Stir-fries work too, especially if you add the yacon toward the end of cooking to preserve some crunch.
Using Yacon Syrup
Yacon syrup is made by concentrating the juice pressed from the roots. It looks and pours like honey or molasses, with a dark amber color and a mild caramel-like sweetness. You can drizzle it over pancakes, stir it into oatmeal, add it to smoothies, or use it anywhere you’d reach for honey or maple syrup.
About 40 to 50 percent of yacon syrup is made up of fructooligosaccharides, the same prebiotic fiber found in the raw root. Because your body can’t fully digest these sugars, the syrup delivers fewer usable calories than an equal amount of honey or table sugar. Its physical and flavor characteristics are similar enough to other liquid sweeteners that substituting it in recipes is straightforward, though you may notice a slightly less intense sweetness.
A clinical study on yacon syrup found that the comfortable daily limit is about 0.14 grams of fructooligosaccharides per kilogram of body weight. For a person weighing around 70 kg (about 155 pounds), that works out to roughly 10 grams of fructooligosaccharides per day, or about 20 to 25 grams of syrup (a little under two tablespoons). Staying at or below that amount keeps digestive side effects at bay for most people.
Making Tea From Yacon Leaves
The leaves of the yacon plant have been used as an herbal tea in Andean communities for generations, traditionally by people managing blood sugar issues or digestive problems. To make it, steep dried yacon leaves in hot water for several minutes, as you would any loose-leaf herbal tea. Lab analysis shows that hot-water extraction pulls the highest concentration of polyphenols from the leaves compared to other methods, and these compounds have strong antioxidant activity. Dried yacon leaves can sometimes be found in specialty tea shops or online.
Why Yacon Is Unusually Low in Calories
Most root vegetables are starchy and calorie-dense. Yacon is different. About 70 to 80 percent of its carbohydrate content comes from fructooligosaccharides and inulin, which are types of soluble fiber your digestive enzymes can’t break down. One kilogram of fresh yacon root (a couple of medium-sized roots) contains about 106 grams of carbohydrates, but 62 grams of those are fructans that pass through your upper digestive tract undigested. That means you absorb far fewer calories from yacon than from a potato or carrot of equivalent size.
These undigested fibers reach your colon intact, where gut bacteria ferment them. This fermentation selectively feeds beneficial bacteria, particularly bifidobacteria and lactobacilli, while keeping less desirable bacterial populations low. The process also produces short-chain fatty acids, which nourish the cells lining your colon. This is why yacon is often described as a prebiotic food.
Digestive Side Effects to Watch For
Because yacon’s sugars ferment in the colon, eating too much at once can cause bloating, gas, and loose stools. In a clinical trial, participants who consumed about 20 grams of fructooligosaccharides per day (roughly double the comfortable threshold) experienced significant abdominal distension, flatulence, nausea, and diarrhea. The participants described the flatulence as severe, and their symptoms did not improve with time.
If you’re new to yacon, start small. A few slices of fresh root or a teaspoon of syrup is a reasonable first serving. Your gut bacteria need time to adjust to the increased prebiotic load. Most people tolerate moderate amounts with no trouble once they’ve built up gradually over a week or two. The comfortable ceiling for most adults is around 10 grams of fructooligosaccharides daily, which translates to a modest portion of fresh root or just under two tablespoons of syrup.