Burger King Zesty Dipping Sauce (Copycat)

My reverse-engineered recipe for Burger King's "Zesty Dipping Sauce", which was once offered with BK onion rings (but is now still available by request only).

• Ready In: 5 mins
• Serves: 6

Ingredients

• 1⁄2 cup  real mayonnaise (use Hellman's or Best Foods)
• 1⁄3 cup tomato ketchup
• 1⁄3 cup  prepared horseradish
• 1⁄4 cup prepared yellow mustard
• 1  tablespoon granulated sugar
• 2  teaspoons lemon juice

Directions

1. COMBINE all ingredients in a resealable container.
2. SERVE with onion rings, burgers, sandwiches, crab cakes, batter-fried fish and prawns; ENJOY!
3. STORE in same container in refrigerator for up to 1 week.