Seasoned meat sliced into small pieces and then backed, often eaten with salad and put into a round piece of bread. You can eat fries with it, but then again, you can eat fries with almost everything. For instance you would be crazy to eat it with peanutbutter, that's another story
It's actually from somewhere in the middle eat but here in holland it's so popular that it's easy to forget that it's not a well-known thing.
It's normally made from the meat from sheep I think. But you could of course substitute that with almost every other type of meat, althought i wouldn't recommend steak because that would, of course, be a waste of a fine piece of meat.
A possible recipe for the spices could be the following.
1 tablespoon ground cumin
1 tablespoon ground coriander
1 tablespoon garlic powder
1/2 tablespoon paprika
1 teaspoon turmeric powder
1/2 teaspoon ground cloves
1/2 teaspoon ground cayenne pepper
1 teaspoon ground ginger
1 teaspoon ground black pepper
1/2 teaspoon ground cinnamon