👉 Beef veins are small blood vessels that appear in the meat of beef, usually near the joints and around the neck area. They are a result of capillaries that have become dilated due to aging, injury or excessive handling of the meat. These veins can make the meat look less appealing as they give it a marbled appearance, but they do not affect the taste or quality of the beef. However, they can be removed before cooking to improve the overall presentation and perceived freshness of the meat.