I was going to explain to you about the classic Algerian street food, garantita, but then I found this great little YouTube video, and I think they do a pretty good job of explaining it themselves!
Garantita is a simple mixture of chickpea flour, water or milk, and an egg, baked to create a quivering loaf. Sandwich it in a baguette and top with harissa and mayonnaise. Like a lot of Algerian food, it's carb-centric and filling! You can see how garantita is the Mediterranean cousin of other chickpea-flour street foods like socca and farinata.