In a wide-mouth mason jar or a container with an airtight lid, add the mayonnaise and ketchup. Stir until combined.
Next, add the sweet pickle relish, dried chives, white vinegar, paprika and kosher salt. Stir until combined.
Add the cover and put in the refrigerator for at least 30 minutes to allow the dried spices and flavors to meld.
The dressing will last in the refrigerator for up to 4 days. Give it a good stir before using.
Notes
Note 1: Use a creamy, low FODMAP mayo option without garlic or onion listed in the ingredients. Note 2: Use a low FODMAP ketchup like Simply Heinz (does contain onion powder, but I personally tolerate it fine), Heinz Organic, Smoke and Sanity, or FODY. Note 3: Use an organic sweet pickle relish to avoid high fructose corn syrup. Low FODMAP Notes: Low FODMAP ingredient information is based on the Monash University Food App and FODMAP Friendly App testing results.