Developing the definitive Italian Dressing recipe for @nytcooking was not a job I took lightly! To celebrate, I made a classic Italian chopped salad, which is not a salad I dress lightly! Homemade Italian Dressing Olive Garden Copycat DiGregorio's Sweet Italian Dressing (6 Bottles) DiGregorio's Italian Market Italian Dressing Recipe RecipeTin Eats Quick and Easy Italian Dressing Real Housemoms Store bought dressing will last two to three months after opening if properly stored. The acidic vinegar based versions last longer than ones containing dairy.