If your not close enough to Door County, but are really in the mood for the delicious fish boil, you can make it at home now. Got this recipe from a free Door County dining guide. I put extra info in though so it truly tastes like the real deal!
Add a 1/4 lb. of the salt to water and bring to a boil. Add potatoes, boil for 16 minutes. Add onions, boil for 4 minutes more. Add fish and the other 1/4 lb. of salt and boil for 10 minutes, then drain in a colander. For each plate, place two pieces of fish, two potatoes and two onions. Then drizzle the fish, potatoes and onions with 2-3 tablespoons of melted butter (I use unsalted). Serve with a wedge of lemon, coleslaw and a piece of Door County cherry pie for dessert.