How do I care for a wood cutting board so it doesn't crack?

The dominant advice across r/Cuttingboards and r/woodworking is to hand-wash only (never the dishwasher), dry it upright, and re-oil regularly with food-grade mineral oil—optionally topped with a beeswax blend. Boards that split or cup almost always do so because they were soaked, left wet, or never re-oiled.