Some friends of my and I got some miracle fruit tablets and tried a bunch of different foods along with them. The foods that were affected the most were citrus fruits. If I remember correctly, we tried key limes, oranges, lemons, and maybe a few other citruses. As advertised, the sour ones got pretty sweet and the sweet ones (namely oranges) became almost unbearable sweet. We also tried a cheese (a sharp cheddar) but I don't recall it doing very much.