Ingredients

3 Tbsp. sparkling wine vinegar

1 tsp. dijon mustard

1/2 tsp. whole-grain mustard

1/2 tsp. minced garlic

1 x-large egg yolk (room temperature)

1 tsp. kosher salt

1/2 tsp. pepper

1/2 cup olive oil

Preparation

The ingredients sans the oil measure to approx. 1/3 of measuring cup.

Add the olive oil slowly whisking constantly (which should measure out to 2/3 cup)