Whisk everything together in a bowl. You can use a food processor or immersion blender for an ultra smooth sauce.
Serve when ready or store in an airtight container in the refrigerator. Stir well before serving.
Notes
For a vegan yum yum sauce, you can use a plant-based yogurt or blend of non-dairy mayo and vegan yogurt. You may also want to use a bee-free honey substitute. You can use ketchup or a reduced sugar ketchup instead of sriracha for a mild yum yum sauce to please the spice sensitive. For a sugar free yum yum sauce, substitute the honey for a calorie-free liquid sweetener or granulated alternative sweetener dissolved in water.