Creamy Lemon Garlic Salad Dressing

2 lemons, juiced
1 cup freshly grated Parmesan cheese
2 garlic cloves, minced
1/2 teaspoon salt
3/4 cup light mayonnaise
1 cup nonfat milk
Mix together lemon juice, parmesan cheese, garlic, salt, and mayonnaise until smooth. Stir in milk, adjusting the amount or adding a little water, to make the dressing as thin or thick as you like. Cover and refrigerate 8 hours, or overnight