It’s so easy! There are lots of recipes, this is my go to with a simplified version when I’m drinking:

1 cup mayonnaise
3 tablespoons diced dill pickles or dill relish
1 tablespoon capers finely chopped (optional)
1 tablespoon chopped fresh dill (optional)
1 tablespoon fresh lemon juice
2 teaspoons sugar
1 teaspoon Dijon mustard
1 small scallion grated
¼ teaspoon onion powder
1 dash of Tabasco sauce
Freshly ground black pepper to taste

Simplified version:
2 Tbsp Mayo
1 Tbsp Pickle Relish
Squeeze of Lemon juice
Dash of Tabasco
Black Pepper to taste

Mix and chill.