Name: Poached Arctic Char with Basil-Tarragon Mayonnaise
Yield: 6 Servings
Ingredients: 2 large egg yolks; 2 tablespoons fresh lemon juice; 1 tablespoon mustard powder; 1/4 cup fresh basil leaves; 1/4 cup fresh tarragon leaves plus 2 sprigs; 1/4 cup extra-virgin olive oil plus more for serving; 1 garlic clove, smashedt; 2 tablespoons kosher salt plus more; 6 6-ounce arctic char steaks, each about 1 1/4-inch thick; 2 bunches asparagus (about 1 1/2 pounds), trimmed; Flaky sea salt (such as Maldon)

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This herbaceous aioli is also terrific spooned over simply prepared vegetables, such as boiled new potatoes or roasted ramps.

Recipe notes