1, cooked cockles are open, if not open, it means cockles are not cooked. Of course, the maturity of cockles can not be judged solely on the basis of whether the opening, some cockles are cooked, but not open. You can pry open the arkshells with a kitchen knife if they are not open.
2, some arkshells without opening, the meat is cooked, not bad, how can not open, you can pinch the arkshells, fan down on the hard objects, if placed on the bamboo and wood chopping board will hurt the chopping board, with the back of the chopper blade tip of the arkshells on the back of a small pit, slowly and gently downward to the shells can be opened. It is easy to do, but be careful to hurt your hands. You must cook the cockleshells, as they are susceptible to hepatitis A bacteria.