Marmite Crisps (England)
For the uninitiated, Marmite is a gloopy, salty, yeasty smear concentrated from leftover brewer's yeast. Its flavor is so strong and polarizing that the product's slogan is actually "Love it or Hate it," which comes from the same marketing geniuses that went on to bring you: "good old potatoes supercharged with a heady dose of lovely Marmite."
But mosquito eggs? Nice! Sweet (or however that tastes) revenge for all the blood they took from me!
Even in Florence there's a typical meal called "lampredotto": it's one of four cow's stomach boiled in water with tomatoes, celeries, carrots and served in a sandwich with green sauce ("extravergine" olive oil, caper and parsley), hot chili pepper or simply with pepper and salt.
In many other place of Italy, pork blood is used to make sweet pies.
Also in Sardinia and Rovigo (city near Venice) the people ate cats