Salt and pepper grinders do not absorb flavors. A pepper grinder or salt grinder is a must-have for any kitchen. KEEP YOUR SPICES FRESH: We have this tightly sealed stainless steel lid to keep your spices away from moisture and dust. Your spices will last a long time and stay fresh. The bottle body is made of stainless steel and acrylic steel, hand-grinding and slow grinding, compact and portable. The top knob can adjust the thickness, rotate the fine particles clockwise and rotate the fine particles counterclockwise.