Strange Maps blog has a post about these "accidental maps" – for example, the africa in milanesa to the left:

“I was cooking this typical Argentinian food called milanesa, when I found the map of Africa in my saucepan,” writes Manuel Barcia from Argentina. “This typical dish is made out of a cut meat from the back of the cow, called nalga, covered with a mix of mashed bread and eggs and then fried. I always say that each piece of meat looks like an undiscovered island or some unknown place, but this looked just like Africa.”

Link – via BB-Blog