To open or shuck an oyster might seem a challenge but it is really quite easy with a bit of practice. You will need an oyster knife and a cloth. Hold the oyster firmly in a cloth, at the back end of the oyster where the shells join, firmly ease the knife between the two shells. Once the oyster knife slides in, give it a twist to pop the shells apart. Slide the knife on the underside of the flat shell to slice through the muscle, this will remove the top shell. Check for any shell that may have come off in the opening process. Try and keep all the natural oyster juice in the shell, this will keep the oyster moist. Practice makes perfect, so keep trying and you will find the sweet spot of the oyster. Or you can always cheat and ask your fish monger to open them.