How full should salt and pepper shakers be maintained?

Maintaining salt and pepper shakers three-fourths full is the ideal choice because it ensures that there is a sufficient amount of seasoning readily available while also allowing for easy dispensing. If the shakers are too full, it can lead to difficulty in shaking the contents out, potentially causing spills or blockages. Conversely, shakers that are only half full or one-fourth full may run out quickly, inconveniencing users and requiring more frequent refills. Keeping them three-fourths full strikes a balance between functionality and practicality, ensuring that diners have enough seasoning at their disposal without the mess or hassle that comes with overfilled shakers.