Common Alphonso mango myths say a floating mango was treated, a brighter colour means sweeter fruit, and a GI tag proves quality. None of these is a reliable test. This page checks ten beliefs against facts and tells you what to ask a seller instead.
Every season the same beliefs about Alphonso mangoes go around on social media and in family groups. Some are harmless. A few lead people to throw away good fruit or to trust a bad test. We sell Alphonso, so we have heard most of them, and we would rather give you something checkable than something comforting. Where a claim has no reliable test, we say so.
Myth 1: A mango that floats in water was treated with chemicals
The fact: the water or bucket test is a rough clue, not proof. Whether a mango floats depends on its variety, size, maturity and how much air is inside the fruit, so floating or sinking cannot tell you how the fruit was ripened. No home test, including this one, proves that a mango was ripened with or without a chemical.
What can be said with certainty is the law. Calcium carbide, which produces acetylene gas, is prohibited for ripening fruit under Regulation 2.3.5 of the Food Safety and Standards (Prohibition and Restrictions on Sales) Regulations, 2011. The practical test is to ask the seller how the fruit is ripened and to buy from one who answers plainly.
Myth 2: A brighter orange or yellow mango is sweeter
The fact: colour reflects variety, sun exposure and ripeness, and it is only a rough clue about sweetness. Alphonso skin is often uneven, and green, gold and a blush can sit together on one fruit. Sweetness is measured with a refractometer, not by eye. Judge a mango by smell, gentle give at the shoulder and the seller's account of origin, not by how bright it looks.
Myth 3: The fridge keeps every mango fresh
The fact: cold can slow or stall the ripening of a firm mango and dull its flavour. Let a firm fruit ripen at room temperature in a ventilated spot, away from direct sun. Once it is soft and fragrant you can refrigerate the ripe fruit for a short time to slow it down. Cut mango should go in a covered container. If you are unsure about a particular fruit, check the guide on how to ripen Alphonso mango or at home.
Myth 4: Bigger mangoes taste better
The fact: size is a grade, not a quality certificate. A larger fruit means a heavier fruit, which is why a dozen from us weighs roughly 1.8 to 3.3 kg depending on grade. It does not mean the fruit is sweeter or riper. When you compare prices, compare the number of fruits and the weight per dozen, because a lower price for a smaller grade is not a bargain or a trick, just a different product.
Myth 5: A GI tag proves quality
The fact: a GI tag is a legal marker of origin. Alphonso from the Ratnagiri and Devgad belt is GI-tagged in India (GI No. 139), and the registry record for the Devgad Alphonso application is public. The tag tells you where the fruit was grown and by whom, but not how it was ripened, packed or handled. We hold GI Authorised User certificate AU/5974/GI/139/260 (GI No. 139). Treat the tag as one check among several, and read our Alphonso mango GI tag guide for the detail.
Myths 6 and 7: Green patches or black spots mean a bad mango
The fact: green patches on an Alphonso do not always mean it is unripe. Alphonso often ripens unevenly, with green, gold and a blush on the same fruit. Press gently at the shoulder and smell the stalk end instead. Small dark dots on the skin are commonly cosmetic. Sunken, wet or foul-smelling patches are not, and fruit like that should be reported within 24 hours of delivery.
Myth 8: A mango that looks perfect is perfect inside
The fact: some defects cannot be seen from outside. Alphonso can develop spongy tissue, an internal flesh disorder. ICAR-IIHR research traced it to the seed shifting into germination mode at about 60% fruit maturity. A fruit can be well shaped, evenly coloured and still affected, which is one reason grading and careful packing matter, and why no seller should promise a flawless box.
Myth 9: A sealed bag ripens mangoes better
The fact: fruit needs some airflow, and a sealed plastic bag can trap moisture. Many people use a loosely closed paper bag for firm fruit at home, but there is no need to force it. Mature mangoes ripen on their own over several days, and on a bed of hay they do so without any added agent. That is how we ripen ours.
We do not use carbide. Our Alphonso mangoes are ripened naturally on hay beds.
Myth 10: Fresh Alphonso is available all year
The fact: Alphonso is harvested about February to June, with the best supply from March to May. Outside this window we do not sell fresh Alphonso. The 2027 season opens on 1 February 2027. For the months in between, Alphonso pulp tins are available all year, from Rs 590 in the 850 g size. Ask any seller for fruit outside the season how it was stored, and what variety it is.
Mango pulp is sterilised and packed in aseptic bags or in sealed cans, which is why it keeps. See the Alphonso mango pulp tin page for sizes.
What to ask any seller instead
- Which district or taluka was the fruit grown in?
- Can you show a GI Authorised User certificate?
- How is the fruit ripened?
- How many fruits and what weight are in the dozen?
- Who delivers, and how long does it take to reach my PIN code?
For us, delivery is by Blue Dart, and about 65% of Indian PIN codes get next-day delivery. Check your PIN code at checkout. Fresh Alphonso is listed from Rs 1,849 per dozen, and the product page shows the price for the size you choose.
Hay-ripened vs carbide-ripened mangoes: what differs
| Point | Naturally ripened on hay beds | Ripened with calcium carbide |
|---|---|---|
| Ripening medium | Mature fruit is laid on hay beds and ripens by itself over several days. | Calcium carbide produces acetylene gas, which is used to force ripening. |
| Legality in India | Allowed. | Prohibited. Regulation 2.3.5 of the Food Safety and Standards (Prohibition and Restrictions on Sales) Regulations, 2011 bars selling fruit ripened with acetylene (carbide) gas. |
| Skin colour (rough clue, not proof) | Often uneven: green, gold and a blush can sit together on one fruit. | Colour alone cannot show how a fruit was ripened; an even bright yellow skin is only a rough clue. |
| Aroma (rough clue, not proof) | A sweet fruity smell, strongest near the stalk, builds as the fruit ripens. | Aroma can be weak when ripening is forced; this is a rough clue only. |
| Taste and health note | Sweet with a little acidity, soft flesh. | The Ministry of Health and Family Welfare (PIB, 18 May 2024) lists dizziness, irritation, difficulty in swallowing and vomiting among effects linked to carbide residues. |
No home test, including the water or bucket test, proves how a mango was ripened. Ask any seller how the fruit was ripened.
People also ask
Does a floating mango mean it is chemically ripened?
No. Floating or sinking depends on variety, size and the air inside the fruit, so it is only a rough clue, not proof. No home test proves how a mango was ripened. Ask the seller how the fruit was ripened, and buy from someone who gives a clear, plain answer.
Is a brighter mango always sweeter?
No. Colour depends on variety, sunlight and ripeness, and it is a rough clue only. Alphonso is often uneven in colour, with green, gold and a blush on one fruit. Sweetness is measured with a refractometer, so use smell, gentle give and the seller's account of origin.
Does a GI tag mean the mango is good?
No. A GI tag is a legal marker of origin. Alphonso from the Ratnagiri and Devgad belt is GI-tagged in India under GI No. 139. It tells you where the fruit was grown, not how it was ripened or packed. Check the seller's ripening method as well.
Should I keep Alphonso mango in the fridge?
Let a firm mango ripen at room temperature first, because cold can slow or stall ripening and dull flavour. When the fruit is soft and fragrant, you can refrigerate it briefly to slow it down. Store cut mango in a covered container in the fridge.
Related searches
- Alphonso mango GI tag explained
- Identify carbide-free mangoes online
- How to identify authentic Hapus mango
- How to ripen Alphonso mango
- Alphonso mango nutritional value
- Alphonso mango season guide
- Buy Ratnagiri Alphonso mango
Sources and further reading
- Food Safety and Standards Authority of India, Food Safety and Standards (Prohibition and Restrictions on Sales) Regulations, 2011, Regulation 2.3.5 (compendium version of 2 April 2025).
- Ministry of Health and Family Welfare via PIB, FSSAI Alerts Fruit Traders to Ensure Compliance with Prohibition of Calcium Carbide in Fruit Ripening, 18 May 2024.
- Wikipedia, Alphonso mango.
- Geographical Indications Registry of India, public search record for application 379, Devgad Alphonso Mango (merged with application 139), accessed October 2026.
Written by Prashant Powle, founder of AlphonsoMango.in. Last reviewed October 2026.