Heat Dutch Oven add 1-tablespoon olive oil, bay leaves, vegetables and saute' 4-5 minutes.
Add remaining olive oil and sear Beef Brisket on both sides. Add 1/4 cup Guinness Black Lager and reduce by one-half. Add Stout, beef stock, pickling season and cover Dutch Oven. Place in pre-heated oven, reduce to 250°F and braise for 5-6 hours.
One hour before the Corned Beef is done start preparing the "Colcannon".
In a large pot add vegetable stock, potatoes and fine sea salt. Cook potatoes 10-15 minutes or until they are done. Strain potatoes and reserve water. Add 3 tablespoons butter and hand mash potatoes. Season with salt and pepper to taste.
Core cabbage and slice very thin. Boil cabbage in potato water and cook until tender. Season with sea salt and black pepper to taste. Hold cabbage warm and strain.
In a small saucepan bring cream to a full boil and reduce to a simmer. Wisk in butter, scallions, parsley, thyme, white pepper and nutmeg. Simmer for 2-3 minutes. Reseason with sea salt and white pepper to taste.
Remove brisket, place on a cutting board to rest before slicing.
In a large pan combine cabbage (strained), cream, bacon bits and simmer for 3-4 minutes. Fold in mashed potatoes and remaining butter. Mix Colcannon to a smooth and creamy consistency. Season with salt and pepper to taste.
Place Colcannon in 6 large bowls and add sliced Corned Beef. Add a tablespoon butter, laddle some Beef Broth over Colcannon and serve.