Soak the shrimp in milk for 30 minutes to eliminate any fishy odor or taste. Drain and rinse well.
In a large pot or Dutch oven, combine the water, lemon halves, orange halves, lime halves, red pepper flakes and salt.
Boil for about 5 minutes.
While the citrus water is coming to temperature, prepare a bowl of ice water and set it aside.
Add the shrimp to the boiling citrus water and allow it to soak for about 3 minutes.
Remove the shrimp with a slotted spoon and immediately plunge them into the ice bath to stop the cooking. Drain the shrimp when they are cool.
In a resealable bag, combine the orange juice, grapefruit juice, pineapple juice, lemon juice, lime juice, sliced lemon, sliced lime, sliced orange, sliced grapefruit and red pepper flakes.
Add the shrimp to the bag and marinate for at least 25 minutes.
While the shrimp is marinating, prepare the dressing. Add all the dressing ingredients to a bowl and mix well.
Chill until ready to dress the salad.
To make the salad, add some greens to a bowl. You can use any kind of salad greens. You can also add any extra vegetables to the salad, such as tomatoes, green onion, radishes, green pepper, etc.
Top the greens with the shrimp and drizzle the Louis Sauce Dressing on top. The shrimp has a nice citrus flavor from all the marinade and boil.
