I personally enjoy garlic (I am French), so I always start flavoring my pot with some olive oil and fresh minced garlic. Then I add my Corned Beef already seasoned including my personal favorite: coriander seeds... I add some fresh pepper and salt then add some water as to prevent my garlic from burning. While my meat is absorbing the garlic flavor, I cut my cabbage, potatoes and carrots.
I add water as to submerge my meat and veggies then add mushrooms (once again I am French).
And Voilà, I only have to let it cook on medium heat for a few hours as it gets tender...I suppose this is my French twist to my St. Paddy's corned beef.