I heard food has a funny taste to it if you eat it under water?
All depends if the wrecker has managed to keep the diesel out of the fresh water tanks?
We had odd tasting fresh water at sea, milk would not mix with tea and coffee, on our return to UK some science bods in protection suits went into the tanks and cut some growths of the tank bulkheads and took them away for analysis, never did find out what they were.
So to make good food the chef needs good ingredients, so if your supplies and services to the galley are poor blame the wrecker but if you have good ingredients and supplies and services to the galley expect critics.
In submarines being the chef will only be one of your Jobs, first you have to pass your part 3 (or whatever it’s called now) and that is not that easy, you have to achieve the right standard to pass WreckerL like myself will have taken many a trainee regardless of rank for part 3 walk rounds, we had to make sure when shit hits the fan you will know how to shut a compartment or bulkhead down. As a senior rate you could be a planes man, attack BA and part of the damage control firefighting team, offer of the watch below on the surface. There is a saying in boats that we do not carry passengers when on opps, and every person has more than one job, except the skipper.
So if you choose to join, good luck, and have fun whilst your young.