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MIT student blogger Lydia K. '14, MEng '16

Adventures with Miracle Fruit by Lydia K. '14, MEng '16

The lemons had a meaty flavor that should not have been there.

Tomatoes! Not as miraculous as miracle fruit.

The berry of the West African Synsepalum dulcificum (miracle fruit) bush has been popular in the United States since the 70s for its temporary effect on taste. The berry’s miraculin glycoprotein (3.42 kilodaltons of carbohydrate, 21.2 kilodaltons of protein) binds to the sweetness receptors of the tongue and activates them in response to acid, making sour foods sweet without affecting other flavors. The change lasts as long as miraculin stays bound to our taste buds—fifteen to thirty minutes.

The maximum sweetness of acidic foods after miraculin is equal to that of a 17% sucrose solution, stronger than almost all known sweeteners. Miraculin has not been approved by the FDA as a sweetener or food additive, but is mass-produced in Japan through genetically modified tomatoes, E. coli, and lettuce. Interest in miraculin spiked after a May 2008 New York Times article on “flavor-tripping parties” in New York and again in 2011, correlated (correlation! not causation!) with protests against the Wisconsin Budget Repair Bill and the release of Radiohead album The King of Limbs. Multiple MIT living groups have had miracle berry parties, including Next House this past orientation and Theta Xi last campus preview weekend.

This Saturday evening Black Hole (the second floor of the north side of Random Hall) had its own fruit tasting party, with freeze-dried miracle fruit pulp pills, about 30 Randomites, and all the above and below foods.


Peanuts are nether sweet nor sour. They acted as our negative control and were, as expected, unchanged.

Strawberries changed the most dramatically. They had a strong new flavor of sweet layered over the already present strawberry sweet we know and love. Most of us liked them. Former Black Hole resident Zev B. ‘08 thought they tasted fake, and prefers the sour versions of most fruit.

Lemons and limes tasted like sweeter, more edible versions of themselves. They were no longer uncomfortably sour. Notably, according to Black Hole resident Catherine O. ‘12, lemons tasted like chicken when preceded by chocolate. Someone else confirmed that there was a meaty flavor that shouldn’t have been there.

Tomatoes and bell peppers adopted sweetness previously unknown to vegetables.

I didn’t try pickles but I heard they didn’t change.

Pineapple tasted like better pineapple.

Goat cheese tasted like a different cheese.

Vinegar was drinkable. It had flavor. I liked it. I wanted to compare it to flavored vinegar but realized that my teeth would be miserable and instead washed my mouth out with baking soda (which neutralizes acids). Kate O. ‘14, also a Black Hole resident, reported that apple cider vinegar unfortunately does not taste like apple cider.



9 responses to “Adventures with Miracle Fruit”

  1. Arnav S. '20 says:

    This seems like such a fun thing to do O:

  2. Susan says:

    My boyfriend bought me a pack of miracle berry tablets for christmas last year. Salt and Vinegar potato chips are awesome in conjunction with the miracle berry. (:

  3. Christi says:

    Oh my gosh yum! I’ve got to try that.

  4. Brent says:

    Vinegar was drinkable? I’m somewhat disturbed by that.
    Regardless, I will go to Earth Fare and buy some (if they’re there).

  5. Abhishek says:

    We will all slowly fall into a continuous cycle of eating miracle fruit followed by strawberries, but drinking vinegar sounds crazy!

  6. rfong'12 says:


    notable consumables that miracle berries fail to make delicious: barbecue sauce, sake, 100% dark chocolate

  7. thelittlerhoboatthatcould says:

    When life gives you lemons, make miracle berries (or just miracle berry fondue) smile On another note, miraculin almost reminds me of an enzyme activator, except not…

  8. Club soda+balsamic vinegar tastes just like coke! Also strawberrys dipped in balsamic vinegar = chocolate strawberries.

  9. Thank you all for the comments. =)

    Miracle fruit is indeed a lot of fun. I would be careful with vinegar or even with lemons. There’s a good reason your body usually does not make those things yummy in large quantities. I couldn’t eat clementines for several days after our miracle fruit experiment. My teeth are fine now, though.