In a medium bowl, whisk together mayonnaise, ketchup, and pickle relish until smooth. Yes, this part should look suspiciously like a galaxy of pink.
Stir in Dijon mustard, onion powder, garlic powder, smoked paprika, and cayenne. The mixture should take on a punchy, rosy hue with a zippy aroma.
Add lemon juice, salt, pepper, and a pinch of sugar if you want a touch of sweetness. Taste as you go—you’re the boss here.
Whisk until everything is well blended and glossy. If it looks chunky, keep whisking; if you’re out of patience, give it a quick shake in a jar with a tight lid.
Let the sauce rest for at least 10 minutes in the fridge. This gives the flavors time to mingle like gossip at a family reunion.