Don't forget that something fresh, vibrant, and crunchy is often missing from potluck gatherings; this easy salad will get gobbled up quickly because it satisfies on those levels.
We use crisp radishes for a bit of crunch and spiciness in this Crab Salad Sandwich. You can also use chopped fennel, celery, thinly sliced fresh apple, or matchsticks of jicama as alternatives.