To make the red-wine vinaigrette, whisktogether the oil, vinegar and mustard in a medium bowl until well combined. Taste and season with salt and pepper.

• 制作红酒醋油沙司，将油、醋和芥末放在一个中等大小的碗里一起搅拌，直到混合均匀。试味道并且加入盐和胡椒。