This recipe does have a lot of yummy juice (Hence the name) so sure you have lots of bread to soak up the delish broth. Or use the broth to make rice. I idea of this is to cook it in liquid so it stays moist. Poaching a fish means cooking it in a flavoured liquid at temperatures of 160 to 180 degrees Fahrenheit. This is a moist heat method. Poaching cooks a fish gently at low temperatures, because it has hot liquid it cooks quickly and retains maximum flavour and moisture. Poached fish can be served either hot or cold. Fish to be served hot is usually poached in fish stock with spices and white wine. This liquid may then become the body of a sauce to be served with the fish.