This recipe came about at the last minute on Memorial Day. I needed something to take a to a barbeque, but didn't want to go to the store. My husband suggested shells, tuna and peas, all things we had on hand. I thought, ewww, sounds gross in the heat, but, I whipped it together. It was a huge hit. So much so our kids, my sisters and niece request it frequently. I'm estimating the measurements for the dressing, as I don't usually measure.