I did not plan to make any substitutions in this recipe, but I ended up doing some, because I was too lazy to go out and pick out the remaining ingredients. I used cherub tomatoes instead of regular tomatoes and I actually welcomed the sweet addition to the salad (and it wasn't a whole pound as the recipe called for, it was almost a half pound). I also used regular canned black olives, my fave, and I think this was why my pasta salad turned out to be very colorful (not a bad thing!)
I did use a very good olive oil, which I picked up during my trip to Italy, so it was perfect use for this salad. Overall, I was very surprised how light but satisfying this recipe was. This was a perfect summer dish. I want to thank Cat for such a great selection! We paired this salad with our pizza, using up the leftover grilled meat that we had!! Another great Ina's recipe, which I know that I will make again before the summer ends!