Frost. Vivid conch can be stored for a long time and can also preserve the freshness of the conch. Frozen conch can be stored for about 3 months. Putting raw conch directly into the freezer can preserve the freshness of the conch. Cooked frozen conch can only be stored for 1-2 days, and the fishy smell will be relatively strong. Once the conch is cooked and frozen, it must be heated and cooked the next time you eat it. If you eat it undercooked, you will easily get enteritis, which is very dangerous.