What does jager blutist wohlgemut on a German stein mean?

"Jägerblut" means "hunter's blood" and "wohlgemut" means "good-spirited" or "merry". So the phrase "Jägerblut wohlgemut" on a German stein can be translated as "hunter's blood, good spirits" or "hunter's blood, merry". This is a common phrase found on German steins and other drinking vessels and it is often used to wish the drinker good health and good cheer.