ThinkGeek used to sell pills made of miracle fruit powder. Made for a neat party trick, turning everything sweet.
So, lemons will taste like lemonade and cider vinegar closer to cider... but cheese will just taste like cheese, if a little off.
At least one person did get a stomach ache from being a little too gung ho about eating raw lemon and drinking apple cider vinegar. It might have been me...
Miracle Fruit Tablets were trendy about a decade ago while I was hanging out with a bunch of friends, we all bought the foods/drinks we hated and got together for a tasting party
my Guinness tasted _exactly_ like a chocolate milkshake. While it doesn't taste as good without the miracle berry today, it still changed my mind enough about it to enjoy a pint 'clean' now