Bertie Bott's Every Flavour Beans are one of the most popular sweets in the wizarding world. They are the same as Muggle jelly beans, except the range encompasses every flavour imaginable. There is also no way of telling for sure what flavour any given bean is without tasting it, although you can try and guess by the colour. The inventor of Bertie Bott's Every Flavour Beans was Bertie Bott, who created them in mid-20th century by mistake. He was planning on making tasty sweets from food, but accidentally made one taste like a dirty sock. He immediately recognised the sales potential of "a risk with every mouthful!"

There are ordinary flavours like chocolate, peppermint, and marmalade, but also less fanciable ones like spinach, liver, and tripe. There are also flavours that are not actual foods, like grass, farm dirt, vomit, earwax, paper and bogeys.