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They are said to be quite a delicacy but sadly comes at a cost (of human lives). I learnt lots about Lisbon from your post as well and perhaps next time you walk into a restaurant in Portugal or Spain you'll be able to tell an interesting story about the food in the menu.

Funny you should say that. I keep forgetting, every time i travel, to take photos of the food I eat and all the strange culinary traditions. Must remember for my next post