Eggs are different in Korea.  I have yet to see a white egg shell.  These brown eggs are big in flavor, even if they are not American-jumbo in size.  The yolks are intensely yellow, practically orange in color.  Perhaps they taste better because there is occasionally a feather or a bit of poop inside the egg carton.  They are not packaged in multiples of 6 (6,12,36).  Rather, they come in multiples of 5 (10,15,30).  Tip: rinse egg before use.