PSA: Pepper is a berry. Grinding it in advance dries it out, which reduces the flavor. This is why you should have a pepper mill on your table. Salt is a mineral. Exposure to air changes nothing about its chemical composition. This is why salt grinders are an absurdity and you should have a simple salt shaker or possibly a little bowl with a little spoon if you like flaky salt. Thank you for your attention to this matter!