Comerci is an old North-Russian dish. Yes, in General, not that dish, it's just unleavened bread, baked with boiled egg. In the old days comerci prepared for the road - simple and satisfying. And most importantly comfortable - clean eggs is not necessary, they do not beat. The dough can be any, but traditionally on the sour cream - I rye. I thought that Easter will be important. Very tasty pickles.