In a skillet over medium high heat add oil and sear your beef in small batches until brown on outside. Remove from pan and place in slowcooker. Continue until all beef is browned.
Turn heat down and pour a little more oil in pan, adding onions, carrots and celery. Stir and let cook for about 5 minutes. Add in garlic and cook for about a minute. Pour in a little of your beef broth to help scrape up all the brown bits in the pan. Carefully pour contents of pan into slowcooker with beef.
Add remaining beef broth, bay leaves, soy sauce, ginger and a pinch of salt & pepper. Give a stir and pour in your barley.