Try not to improvise with the measurements in this list of ingredients — follow closely and taste before you add. If your shrimp are larger than bite-size, feel free to cut them into smaller pieces. Use a good quality mayonnaise or better yet, make your own. I would not attempt this sandwich on typical po'boy French bread since the dense bread could overwhelm the lightness of the dish. I use a soft, fresh hoagie-type roll, but a quality hot dog bun will work fine. An optional idea for this shrimp mixture is to serve it stuffed in a cold Creole tomato.