1, conch cooking time is not fixed, need to be based on the size of its head to determine, in general, medium-sized conch in the water after boiling continue to cook for about 5-6 minutes can be cooked, while the big conch, then it is best to cook for 12-15 minutes, so as to be completely cooked through.

2, not sure whether the conch is cooked or not, you can look at its shell is not open, in the open shell continue to cook for 3 minutes after cooked.