Add the mayonnaise, Dijon mustard, honey, apple cider vinegar, garlic powder, salt, and black pepper to a small mixing bowl.
Whisk until the mixture is completely smooth and creamy, with no streaks remaining.
Taste and adjust if needed by adding a little more honey for sweetness or extra Dijon mustard for a tangier flavour.
Serve immediately or cover and refrigerate for at least 30 minutes to allow the flavours to meld.
Store any leftovers in an airtight container in the refrigerator for up to one week.