What is mustard and mayonnaise mixed together?

Mustard and mayonnaise mixed together is commonly called mustard mayonnaise, mustard aioli, or sometimes just mustard sauce.

It's a popular condiment that combines the tangy bite of mustard with the creamy richness of mayonnaise. It's often used as a sandwich spread, a dipping sauce for fries or vegetables, or as a glaze for roasted chicken or fish.

Here are some variations you might see:

* Honey mustard: This version adds honey for sweetness.

* Dijon mustard mayo: Uses Dijon mustard for a more intense, tangy flavor.

* Spicy mustard mayo: Includes hot sauce or chili flakes for a kick.

Let me know if you want to explore any of those variations!