-I purchase the grape tomatoes, Romaine, croutons, Parmesan cheese and Cardini's dressing at Costco.-*I usually prefer fresh grated Parmesan, but in this case, I like the bagged grated Parmesan. It holds up better and won't "fade" into the salad. A big bag will last forever, and can be frozen, if needed. Found in the refrigerator section next to other bagged, grated cheese.-*If you can't find Cardini's, any other name brand of Caesar dressing will work. Also, it's best to refrigerate the salad dressing before adding to the salad. Helps keep the salad cooler.-If grape or cherry tomatoes aren't available or too expensive, use chopped Roma tomatoes instead.-Adding chopped or sliced chicken makes this a nice main dish salad.-This makes a huge salad, enough to serve about 30-40 as a side dish. Depending on how polite your peeps are.