Is the "Moonmelon" Real?

Some Online Information Is Less Than Trustworthy

Moonmelon or blue watermelon
Netlore Archive: Viral image purportedly shows a "moonmelon" or "moon melon," a Japanese fruit similar to watermelon except that its flesh is bright blue and it can "switch flavors" after you eat it. Viral image

Have you ever tried moonmelon? Sadly, it's unlikely you'll get the chance, though you may have read the following on the Web:

Moonmelon (scientifically knows as asidus). This fruit grows in some parts of Japan and is known for its vibrant blue colour. This fruit's party trick is that it can switch flavours after you eat it. Everything sour will taste sweet, everything salty will taste bitter, and it gives water a strong orange-like taste! Bucket list fruit!

The Truth About Moonmelon

This popular viral image has been circulating since mid-2011, when it first began showing up on Tumblr and Pinterest. Sorry to disappoint, but it's a hoax. There's no such thing as a moonmelon, or any other kind of melon that has blue flesh. "Asidus" isn't the scientific name of any real fruit or vegetable. The image is a color-manipulated version of a commonly available stock photo of an ordinary watermelon.

Are Any Real Fruits Similar to the Moonmelon?

There is, as it happens, a fruit that, when swirled around in one's mouth for a minute or so, alters the flavor profiles of anything tasted afterward. "Beer can taste like chocolate, lemons like candy," says a May 28, 2008, New York Times article about a West African berry known as "miracle fruit" (Synsepalum dulcificum). The reaction is caused by a protein in the berry dubbed, appropriately enough, Miraculin. The existence of the fruit was first noted in 1725 by French explorer Reynaud Des Marchais and made known to the larger world in a research paper by botanist W.F. Daniell in the 1800s. Some researchers have advocated its use as a natural sweetener.

What's more, there are plenty of blue fruits and veggies. According to, the following qualify:

  • Black currants
  • Black salsify
  • Blackberries
  • Blueberries
  • Dried plums
  • Eggplant
  • Elderberries
  • Grapes
  • Plums
  • Pomegranates
  • Prunes
  • Purple Belgian endive
  • Purple Potatoes
  • Purple asparagus
  • Purple cabbage
  • Purple carrots
  • Purple figs
  • Purple grapes
  • Purple peppers
  • Raisins

More Surprising Real and Not-So-Real Fruits include the Monkey Orchid and the Spider in the Oreo.


The 'Miracle' Berry that Could Replace Sugar, 29 May 2014

A History of Moonmelon, the Most Popular Fruit That Doesn't Exist
The Daily Dot, 14 January 2014

A Tiny Fruit That Tricks the Tongue
New York Times, 28 May 2008