Fish poachers are often known as Fish Kettles. Poaching fish is super healthy and is a fast, easy cooking alternative with no fuss. You can flavour the fish by adding ingredients to the cooking liquid and after you have poached the fish you can save the cooking liquid (fish stock) to create tasty sauces or Jus. Like poaching, steaming fish is a great cooking method for those of you that are calorie counters. No fat is needed, so if you're cutting the fat in your diet, steaming and poaching fish is definitely for you.