Arvi Itching: Picking, Peeling and Cooking Colocasia Roots and Leaves
Arvi itching comes from tiny needle-shaped crystals (calcium oxalate) in the skin and flesh, and the fix is simple: oil your hands or wear gloves to peel, and always cook arvi fully, ideally with something sour. Raw arvi, or raw colocasia leaves, will burn your mouth and throat. Here’s how to pick good arvi, peel it without the itch, cook the roots and the leaves safely, and who should keep portions small.
Before you start
- Never eat raw: not the root, not the leaves, not the stems.
- Season: mostly monsoon to early winter, roughly August to December.
- Pick: firm, dry, egg-sized pieces with no soft spots, mould or sprouts.
- Store: cool, dark, airy basket, unwashed. About 1 to 2 weeks.
- Cook: boil or pressure cook until a knife slides through, and add tamarind, lemon, amchur or dahi.
How to pick good arvi at the market
The arvi sold in Pakistan and north India is usually the small side-corms of the taro plant, each about the size of an egg or a small potato. Bigger central roots appear too, sold in pieces.
- Squeeze each one. It should be rock firm. Any softness, even at one end, means rot has started inside.
- Check the ends. Look for mould, wet patches or a sour smell where the root was cut from the plant.
- Look for sprouts. A pink or green shoot means it’s old; it’s still usable if firm, but it won’t keep.
- Skip damaged skin. Deep cuts, cracks or insect holes let rot in fast.
- Choose similar sizes so they cook evenly. About 500 g feeds 3 to 4 people as a sabzi.
- Prefer drier, earthier heaps over washed, wet ones, which spoil in days.
Cutting one open at home, you want creamy white flesh, sometimes with pink or purple flecks, which is normal for some types. Grey, brown or slimy flesh inside means throw it away.
Why arvi itches, in plain words
The taro plant is full of calcium oxalate crystals shaped like microscopic needles. They sit in tiny bundles that burst when you cut or chew raw arvi. The needles poke into skin, lips and throat, and the result is itching, burning and sometimes swelling.
Two things tame them. Heat and long cooking break the crystal bundles down. Acid (tamarind, lemon, amchur, dahi) is the traditional partner; cooks have added it for generations, and many find it makes arvi gentler on the throat. Boiling alone does most of the work, so don’t skip it and rely on acid.
Some batches are simply itchier than others. If a cooked dish still scratches your throat, it wasn’t cooked long enough or that batch was harsh. Don’t finish it.
How to peel arvi without the itch
- Rub 1 tsp of oil over both hands, or wear kitchen gloves.
- Wash the arvi well under running water, scrubbing off soil. Don’t soak.
- Easiest method: boil the whole, unpeeled arvi in water for 10 to 15 minutes (or pressure cook for 2 whistles) until a knife goes in easily. Cool, then slip the skin off with your fingers. Very little itch this way.
- If peeling raw (for crisp fry), dry the arvi first. Wet raw arvi turns slimy and slippery. Peel with a peeler, then keep going with dry hands.
- Wash hands with soap afterwards. If they itch, rinse in water with a squeeze of lemon, or rub a little oil and wash again.
Keep raw arvi and its peel away from children and pets. For a fuller look at the itch and gout questions, see our arbi side effects guide.
Storing arvi so it lasts
- Whole, unwashed: in a basket or paper bag in a cool, dark, airy corner. About 1 to 2 weeks in winter, less in humid heat.
- Not the fridge for whole raw arvi. The cold, damp air can make it go soft and mouldy faster.
- Boiled and peeled: in a closed box in the fridge for 2 days.
- Freezer: boil until just tender, peel, cut, cool and freeze flat. Keeps about 3 months, good for curry. Fry turns out less crisp.
Three arvi dishes worth making
1. Dry ajwain arvi (crisp, for 3)
500 g arvi, boiled until just tender, peeled and cut into thick rounds. Toss with half tsp ajwain, half tsp turmeric, 1 tsp chilli, salt. Shallow-fry in 2 tbsp oil on a wide pan until golden, about 10 minutes, pressing each piece a little flat. Finish with 1 tsp amchur and chopped coriander.
2. Arvi salan with dahi or tamarind
Boil and peel 500 g arvi. Fry 1 onion, ginger-garlic paste and 2 tomatoes until the oil shows. Add spices, the arvi and 2 cups water. Simmer 10 minutes. Stir in half cup whisked dahi off the heat, or 2 tbsp tamarind pulp during the simmer. Serve with roti.
3. Arvi patta pakora or patra (colocasia leaves)
Use 6 tender, dark leaves. Cut out the thick middle vein. Spread a paste of 1 cup besan, 2 tbsp tamarind pulp, 1 tsp jaggery, spices and salt on each leaf, stack, roll tight and tie. Steam 20 to 25 minutes until a knife goes through easily. Cool, slice, then shallow-fry or temper with mustard seeds and sesame. Raw or quickly fried leaves will burn the throat; steaming first is the safe step.
Good combos: arvi with dahi raita or a sour chutney, plus a green salad; the acid sits well with the starchy root. Arvi with rice and potato in the same meal is a lot of starch; pick one.
Taro is one of the oldest crops people have farmed, and it’s still a staple from Punjab to the Pacific islands.
What arvi does for you, honestly
Arvi is a starchy root, much like potato. A normal serving of about 100 g cooked gives roughly 140 kcal, around 4 to 5 g of fibre, and a good dose of potassium. That’s more fibre than most potato, which makes it filling. It also brings vitamin E, B6 and some magnesium.
What’s hype: arvi isn’t a “weight-loss vegetable” or a special food for blood sugar. It’s a starch; treat it as part of your roti or rice share, not an extra on top.
Arvi leaves and stems: how to use them
The leaves (arvi ke patte) and stems are eaten across South Asia: patra in Gujarat, patrode on the Konkan coast, and as pakora in Punjab. They hold even more oxalate crystals than the root. Always cook them thoroughly, usually steamed or simmered for 20 minutes or more, and add tamarind or lemon. Young, tender, smaller leaves itch less than big old ones. Throw away any leaf that’s yellow, torn or slimy.
Arvi isn’t a skin or hair ingredient. Raw arvi juice on the skin causes itching and rashes, so keep it out of face packs completely.
Grandmothers always cooked arvi with ajwain, amchur, tamarind or dahi, and many also called it “baadi” (gassy) and kept it away from people with joint pain. The sour partner is sound practice. The gas is real for some people, as with any starchy, fibrous food; ajwain adds flavour and some find it settles the stomach. The joint-pain rule is tradition only; if joints are swollen and painful, see a doctor rather than cutting foods at random.
Myth: soaking arvi in salt water makes it safe to eat raw
The truth: no soak removes the crystals well enough. Only proper cooking does. Why people believe it: salt water does cut the slime on the surface, and less slime can feel like less itch while peeling.
Surprising facts about arvi
- Hawaiian poi, a traditional staple, is made from cooked, mashed taro.
- The leaves are so waterproof that rain beads and rolls straight off them.
- “Elephant ears”, the big garden plant, is a close relative, and it’s just as itchy raw.
People who’ve had calcium oxalate kidney stones, or been told to follow a low-oxalate diet, should ask their doctor before eating arvi or its leaves often; see our kidney stone home care guide. With kidney disease, the potassium matters: your dietitian sets the amount. With diabetes, count arvi as a starch, like potato. If you swell up, wheeze or your throat feels tight after eating arvi, that’s an emergency; get to a hospital. For babies from 6 months, a little well-cooked, mashed arvi is fine; skip the leaves until your child eats family food, and add no salt under 1 year. More roots and greens are in our Fruits and Vegetables hub, including lotus stem.
Arvi itching and colocasia leaves: your questions
Why does arvi cause itching?
It contains calcium oxalate crystals shaped like tiny needles. They prick the skin, lips and throat when arvi is raw or undercooked. Thorough cooking breaks them down.
How to stop arvi itching on hands?
Oil your hands or wear gloves before peeling, or boil arvi in its skin first and peel afterwards. If hands already itch, rinse with water and a squeeze of lemon, then wash with soap.
What to do if arvi makes your throat itch?
Stop eating that dish. Sip cool water or a little dahi and it usually settles within an hour. If your lips, tongue or throat swell, or breathing gets hard, go to a hospital straight away.
Can colocasia leaves be eaten raw?
No. Raw leaves cause severe burning and itching in the mouth and throat. Steam or simmer them for at least 20 minutes, usually with tamarind or lemon.
How long to boil arvi?
About 10 to 15 minutes in boiling water, or 2 whistles in a pressure cooker, until a knife slides in with no resistance. Bigger pieces take longer.
Is arvi good for diabetes?
It’s fine in portions. Arvi is a starch like potato, with a bit more fibre. Count it as part of your carbohydrate for that meal.
Is arvi good in pregnancy?
Well-cooked arvi is a normal food in pregnancy. Wash off all soil and cook it thoroughly. If it gives you gas or heartburn, keep portions small.
Is arvi bad for uric acid?
Arvi is low in purines, so it isn’t a major concern for uric acid. Heavy fried versions are the bigger issue for gout. Our separate arbi guide covers the joint-pain belief in more detail.
How to know if arvi is bad?
Soft spots, mould, a sour smell, or grey and slimy flesh inside mean it has gone off. Throw those away. A little pink colour in the flesh is normal.
Why is my arvi slimy?
Arvi naturally releases a sticky starch when cut, especially if wet. Peel it dry, or boil first and peel after, and the slime is far easier to handle.
Can dogs or cats eat arvi?
Keep raw arvi, leaves and peels away from pets. The same crystals irritate their mouths badly. If a pet chews some and drools or paws at its mouth, call a vet.