Cutting corned beef across the grain is a technique used to achieve more tender and flavorful slices of meat. The grain of the meat refers to the direction of the muscle fibers. When you cut against the grain, you are slicing perpendicular to the fibers, which makes them shorter and less tough.
There are several benefits to cutting corned beef across the grain. First, it makes the meat more tender. When you cut with the grain, you are essentially pulling the muscle fibers apart, which can make the meat tough and chewy. Cutting against the grain shortens the muscle fibers, making them easier to chew.
