The Yam Most People Have Never Heard Of — and What It Does to the Body When You Drink It
Most people walk past it at the market without a second glance. Small, rough-skinned, unassuming — it does not announce itself the way other vegetables do. It simply sits there, quietly, in the way that the most extraordinary things so often do.
It is called cushcush. A yam — one of the oldest cultivated plants in the world, native to the Americas and the Caribbean, known for centuries in tropical kitchens as something that nourishes deeply and cleans the body from the inside out.
And when you prepare it as a warm drink — simply, gently, the way it has always been prepared — what it does to the liver, the kidneys, and the bladder is something that most people have never experienced from a single glass of anything.
Here is everything you need to know.
What Cushcush Actually Is
Cushcush — known scientifically as Dioscorea trifida — is a species of yam that has been grown and eaten across the Caribbean and South America for thousands of years. Unlike the orange sweet potato that most people are familiar with, cushcush has a dense, starchy flesh that ranges from white to pale purple, a flavour that is subtle and slightly sweet, and a nutritional profile that sets it apart from almost any other root vegetable you can name.
It is rich in vitamin C, vitamin B6, potassium, and dietary fibre. It contains a remarkable set of antioxidants that researchers have identified as having a direct and measurable effect on the liver and kidneys. And it contains natural compounds called diosgenins — found across the Dioscorea family of yams — that have been studied extensively for their anti-inflammatory, detoxifying, and organ-supporting properties.
In traditional medicine across the Caribbean and tropical regions, cushcush has long been used not just as food but as medicine. Boiled, the cooking water drunk warm, it has been used for generations to support kidney function, flush the bladder, and give the liver the compounds it needs to do its work thoroughly and well.
What Happens in the Body When You Drink It
The liver receives exactly what it needs to cleanse
The liver is the body’s primary filtration system — responsible for processing everything that enters the bloodstream, neutralising toxins, breaking down fats, and preparing waste for removal. When it is overworked or undernourished, everything suffers. Energy drops. Digestion slows. Skin loses its clarity. That persistent heaviness and fatigue that people sometimes accept as simply the way they feel — that is often the liver asking for help.
The antioxidants and diosgenin compounds in cushcush support the liver’s natural detoxification pathways directly — stimulating the processes by which it identifies, neutralises, and removes what does not belong. People who drink this regularly often describe feeling lighter within the first week. Less heavy. More clear. As if something that had been sitting in the background simply lifted.
The kidneys flush more efficiently
The potassium in cushcush has a natural diuretic effect — gently encouraging the kidneys to increase urine production and flush accumulated waste and excess minerals from the body more efficiently. This is not the harsh, depleting effect of pharmaceutical diuretics. It is gentle, balanced, and the body responds to it in a way that feels completely natural.
The result is a reduction in the bloating, the lower back heaviness, and the general sense of fluid retention that so many people carry without realising how much it is affecting the way they feel day to day.
The bladder is soothed and strengthened
The anti-inflammatory compounds in cushcush reduce irritation in the lining of the bladder and urinary tract — calming the urgency, the mild discomfort, and the unpredictability that so many people experience and quietly accept as normal. With consistent use, the bladder functions more comfortably and more reliably, and the need to wake at night is often significantly reduced.
Blood sugar becomes more stable
The dietary fibre in cushcush slows the absorption of sugar into the bloodstream — preventing the sharp spikes and crashes that cause energy to rollercoaster through the day. The diosgenin compounds also have a documented effect on insulin sensitivity, helping the body manage blood sugar more efficiently over time.
Most people notice their energy becoming more even within the first two weeks. Less dependent on food or caffeine to feel functional. More steady and more reliable from morning to evening.
The immune system strengthens quietly
The vitamin C in cushcush supports the immune system directly — stimulating the production of white blood cells and maintaining the body’s first-line defences. The antioxidants protect cells from the oxidative damage that accumulates over time and weakens immunity gradually and invisibly. Drunk regularly, this drink builds a quiet, consistent resilience that is most clearly noticed by what does not happen — the infections that do not take hold, the recovery that is faster than expected, the winter that passes without the usual weeks of illness.
Your Ingredient List
- 1 medium cushcush yam — peeled and cut into rough chunks
- 3 cups of clean water
- The juice of half a lemon — to support the liver and brighten the flavour
- A small piece of fresh ginger — for anti-inflammatory benefit and warmth
- 1 teaspoon of raw honey — optional, for gentle sweetness
- A pinch of turmeric — optional, for additional liver support
How to Make It
Step 1 — Peel the cushcush yam and cut it into rough chunks. There is no need to be precise — the pieces will be strained out at the end.
Step 2 — Place the yam pieces into a saucepan with the three cups of cold water. Add the sliced ginger and turmeric if using. Bring slowly to a gentle boil, then reduce to a low simmer.
Step 3 — Simmer with the lid on for twenty to twenty five minutes, until the yam is completely soft and the water has taken on a warm, slightly starchy quality and a faint golden colour.
Step 4 — Remove from heat and allow to cool for five minutes. Strain through a fine cloth or sieve into a clean mug or jug, pressing the yam pieces firmly to extract every drop of the liquid.
Step 5 — Add the lemon juice and honey, stir gently, and drink warm. The taste is mild and slightly sweet — nothing sharp, nothing difficult. Something the body seems to recognise immediately as nourishing.
The yam pieces that remain after straining are not waste — they can be mashed, added to soup, or eaten as they are. Nothing is discarded.
When and How Often to Drink It
One glass each morning, on an empty stomach before breakfast, is the most effective way to take this drink. The empty stomach allows the compounds to be absorbed directly and completely, without competing with the digestion of food.
Drink it consistently for at least two to three weeks before drawing any conclusions. The kidney and bladder benefits tend to be felt first — often within the first three to five days. The liver and blood sugar effects build more gradually, and are best assessed after a full month of regular use.
What to Expect
The first three to five days — The kidneys respond quickly. Fluid retention eases. Bloating reduces. Lower back heaviness begins to lift. Urinary comfort improves noticeably.
The first two weeks — Energy becomes more even throughout the day. Digestion settles. Skin begins to look clearer. Sleep often improves as the body’s internal environment becomes less burdened.
After one month — The change is clear and consistent across the whole body. The liver is functioning more efficiently. The kidneys are cleaner. The bladder is calmer. Energy is more reliable. And most people, by this point, describe the same thing — they simply feel better than they have in a long time, in a way they cannot quite attribute to any single cause because it is happening everywhere at once.
One Last Thought
There is a quiet wisdom in the foods that have been used for thousands of years in the places where they grow. They did not survive that long by accident. They survived because they work — because generation after generation of people prepared them, drank them, felt the difference, and passed the knowledge on.
Cushcush is one of those foods. Humble, unassuming, easy to overlook. But what it does to the liver, the kidneys, and the bladder — gently, completely, and in a single glass each morning — is something that no amount of expensive supplements has ever quite replicated.
One glass. That is all it asks.
And what it gives back is a body that feels, in the most fundamental and unmistakable way, clean.
