High Fish is fantastic and simply allows controlled rotting of fish for exciting taste and flavour. The smell may seem extreme, but one can enjoy this with experience. Cutting fish into pieces speeds the process, and putting previously well rotted fish in contact in container is helpful. Plastic containers best avoided, although Inuit problems with these probably result of long term storage. Glass or china containers are best. If lid is sealed it should be aired periodically, but not necessarily daily. Kept in fridge it can take longer to age. Out of fridge, process speeds up, and high room temperature works, as proved by Meateor Man AFK who kept his Tuna in jar underground, and then in his car and aired at high temperature. Airing outdoors, flies may get in, so unless you regard this as beneficial improvement, cover container with fine fabric sealed at edges. Pure Raw Fish alone is needed, with no condiments when ready to eat. Time taken relates to temperature and storage method, and to individual choice, and can range from weeks to months. Generally the longer the better, as long as it is kept moist – the longer the stronger! All relates to fresh raw fish and frozen fish is difficult, as it refuses to rot. If you want to try frozen fish I am experimenting, with some success, over a long period. Let me know how you get on and I will help you with this project, as I do not want you to fail or give up!