Ingredients

• 1 tablespoon Dijon ­mustard
• 1/4 cup fresh lemon juice (about 5 tablespoons, from 2 medium ­lemons)
• 1/2 cup extra­ ­virgin olive ­oil
• 1/4 teaspoon salt
• 1/8 teaspoon freshly ground black pepper

Instructions

1. Place the mustard and lemon juice in a blender or food processor and pulse until well mixed.

2. Gradually add the oil while processing until the mixture emulsifies. Season with salt and pepper.