4 x tbsp Mayo.
2 x tbsp Ketchup.
3 x Dill Pickles. (Finely chopped).
Cayenne Pepper. (Add a little at a time to desired taste/heat).
1 x tbsp Horseradish Sauce. (This brings it all together).
I do a version of just that myself but i skip the Horseradish Sauce and add a tiny splash of white vinager. But i will try to add Horseradish Sauce next time.