To make a prawn cocktail, start by making the cocktail sauce. In a small bowl, combine ketchup and horseradish (or ketchup and mayonnaise). Stir until smooth. Set aside.
If you make your own mayonnaise:
Start by mixing together egg yolks, lemon juice, mustard, and salt. Then, slowly add oil to the mixture, whisking constantly. As the oil is incorporated, the mayonnaise will begin to thicken and take on a creamy texture. Season to taste and mix it with the jetechup, as stated above.
Next, fill a large pot with a little water and bring to a boil. Add the prawns and cook for two minutes, or until cooked through.
Drain the prawns and place them in a large bowl. Add the cocktail sauce and stir until coated. Serve immediately. Enjoy!
Notes
The amount of ingredients are measured for a starter dish. If this recipe is for a main course, double the ingredients.