"boil their whitefish in water"
I don't know if anyone has ever tried a "Wisconsin Fish Boil". Sometimes called a "Mid-West Fish Boil" or a "Door County Fish Boil". It's typically made with Whitefish, but Lake Trout also works. I first came across this method on a Steelhead trip to the Betsie River in Michigan back in the early '90's. Guys at the "camp" we were staying at would make it over an open fire in a big old cast iron pot that looked liked it once belonged to a witch.
It's simple but produces delicious results...the Whitefish ends up with the taste and texture of something more akin to Shrimp or Lobster than fish.
It uses an insane amount of salt to raise the boiling point of the water...so it becomes like "deep frying" with water. The flavour of the fish becomes very mild, the texture is firm, and the result doesn't taste salty at all. I make it at least once a year...great for feeding a big crowd, just multiply the recipe accordingly....but it's important to maintain the ratio of a total of one cup of salt to 4 quarts of water...and the bigger tbe pot, the better.
Recipe for 2 to 4 people:
Bring 4 quarts of water to a boil in a large pot. Once boiling add half a cup of kosher, pickling or sea salt (not iodized), a couple of handfuls of small redskin potatoes (skin on), and a couple of handfuls of pearl onions. Boil at a simmer until the potatoes are just barely fork tender (about 15 minutes depending on the size of potatoes). At that point, turn up the heat again to a roiling boil. Add the fish (2 lbs or so of skinless fillets cut into 2 inch chunks) and another half a cup of salt. Keep on high heat. When the fish is just starting to get flakey (but not falling apart)...about 7 to 10 minutes...drain the whole pot and divide on plates. Sprinkle with fresh chopped parsley, and serve with lots of melted butter and lemon.
Tartar sauce not required.