Ingredients
Equipment
Method
- Place the mayonnaise and ketchup in a clean glass mixing bowl. Stir with a whisk or spatula until the colors begin to blend.

- Add the melted butter only after it has cooled until no longer warm. Add lemon juice, sugar, garlic powder, sweet paprika and onion powder. Whisk thoroughly, scraping the sides, until smooth and pale pink.

- Whisk in cold water 1 teaspoon at a time, using 1–2 teaspoons as needed. Stop when the sauce is thick enough to cling to a spoon but loose enough for dipping.

- Cover and refrigerate for at least 30 minutes, then stir again. Taste with a clean spoon and adjust only if needed. Keep at 40°F (4°C) or below.

- Spoon a small amount into a clean dipping bowl. Serve with cooked shrimp, chicken, rice or vegetables. Keep the remaining sauce refrigerated and use clean utensils.

Notes
Makes approximately 3/4 cup; divide the batch into six servings of roughly 2 tablespoons. Actual volume varies with mayonnaise and added water.
Nutrition is a rounded estimate using full-fat mayonnaise, unsalted butter, regular ketchup and all listed sugar. Brands and substitutions change the values; dipping foods are excluded.
No rice vinegar is added, but mayonnaise or ketchup may contain vinegar, including rice vinegar in some brands. Check labels if avoiding a specific ingredient. Standard mayonnaise contains egg and butter contains milk.
Refrigerate covered at 40°F (4°C) or below and use within 3–4 days as a conservative homemade-sauce guideline. Do not return used dipping sauce to the storage container. Discard sauce left out longer than 2 hours, or 1 hour above 90°F (32°C). Freezing is not recommended because texture can separate.
