Yes, you can freeze the carne asada meat pre- or post-cooking. Raw: Add the steak and marinade to a large freezer-safe bag. Seal the bag, squeeze out the excess air and then freeze for up to three months. Allow it to thaw in the refrigerator before cooking – it will marinate while it thaws. Cooked: Allow the steak to cool completely before transferring to a freezer-safe container or bag and freezing for up to 3 months. Allow it to thaw in the refrigerator before reheating.