None

If the Queen was coming for tea and you made her a chocolate cake, I bet, that you would try very hard to make sure, that it was the loveliest cake she had ever tasted. I expect, that you would be very careful to weigh out all the ingredients and follow the recipe to the best of your ability. In fact, I'm positive that you would not add anything horrid to the mixture, anything horrid like a jar of slug poo or a pot of worm snot. Slug poo and worm snot are two ingredients that Chef's do not recommend.