In a food processor or blender, combine basil, sour cream, mayonnaise, mustard, and lemon juice. Season with salt and pepper.

• 把罗勒，酸奶油，蛋黄酱，芥末，和柠檬汁放到食物处理机或搅拌机里搅拌。用盐和胡椒粉调味。