Moromoto prep
https://www.youtube.com/watch?v=uiOq9EdFcys
breakdown of a whole tuna
https://www.youtube.com/watch?v=7gNqLRbX8uM
https://www.youtube.com/watch?v=62L_uqk26KE - Raw fish safety
Raw fish, main risks
bacteria
parasites - many but the 3 below are the ones that can live in mammals
eat raw fish within 24 hour of purchase, ask when it was killed / prepped
Ask your fishmonger when the fish was filleted - find a good one with a high turnover
Most sushi restaurants will freeze fish before prepping - they have tech that doesn't allow water to crystalise - keeps texture well. This is requied in the USA by law
home freezers will destroy the texture of a lot of fish - salmon due to its fat holds up nicely
Freezing only pauses bacteria growth but does not kill them - supermarket frozen is not good enough - lots of transport - refrozen a lot of times - texture not ideal