In a bowl, combine the yolks with ¼ cup minced chives, the mustard, mayonnaise, cayenne, sweet relish, red onion, lemon juice, Tabasco, chervil and salt until fully incorporated.

Mustard greens are peppery-tasting greens that come from the mustard plant. This article provides a complete overview of mustard greens, including their nutrition, benefits, and uses.