Basically an unsliced loaf with very thin slices cut into it except at the base, so the slices are left joined together at the bottom. Then the loaf gets brushed with butter and the whole thing baked in the oven till golden and crispy. The slices curl and open up like the pages of a book. You rip off a slice at a time and nibble or dip them. It’s amazing how many slices one can eat - it looks so much when it first comes out of the oven, but half an hour later there’s only the base left. And burned fingers. I prefer this to potato chips actually.