The Mason Salad The secret to building the perfect salad in a mason jar is all in the layering. By following this order (along with proper storage and refrigeration), your salad can last 3 - 5 days: Start with the dressing on the bottom. Putting the dressing at the bottom prevents the salad from getting soggy and when it’s time to eat, it’s easy to mix. Add protein such as beans, edamame, tofu, tempeh, fish and whole grains like quinoa or brown rice. This adds a layer betwe