Name: Anchovy Mayonnaise
Ingredients: 1 large egg yolk; 1 teaspoon Dijon mustard; 2 tablespoons fresh lemon juice; ½ cup grapeseed oil; ¾ cup olive oil; 6 anchovy fillets packed in oil, drained, very finely chopped; Kosher salt and freshly ground black pepper

Ingredients

1 large egg yolk
1 teaspoon Dijon mustard
2 tablespoons fresh lemon juice
½ cup grapeseed oil
¾ cup olive oil
6 anchovy fillets packed in oil, drained, very finely chopped
Kosher salt and freshly ground black pepper

Steps

Whisk egg yolk, mustard, and 1 tsp. lemon juice in a small bowl. Whisking constantly, gradually drizzle in grapeseed oil, then olive oil, drop by drop at first, until mayonnaise is thickened and smooth. Whisk in anchovies and remaining lemon juice; season with salt and pepper. Cover and chill.
DO AHEAD: Mayonnaise can be made 1 day ahead. Keep chilled.