When choosing a mock tender steak, look for pieces that have bright-red flesh with a bit of fat. If you plan on grilling the mock tender steak, choose a cut-thick steak. You can get pre-cubed steaks for stews that make it convenient to place the meat into the stew. Once you receive your mock tender steak, you can store the meat inside of the refrigerator for up to five days when stored in an air-tight plastic bag or container. To freeze mock tender steak, wrap it in plastic wrap and then a layer of aluminum foil and keep in the freezer for up to three months.