In large pot or dutch oven, heat 3 tsp. vegetable oil. Season beef with salt and pepper and sear in pot on all sides; transfer to plate. To pot, add 1 thickly sliced large onion and 2 cloves minced garlic; cook for 3 minutes. Add 2 cans Guinness, 1/2 cup water, a few sprigs each rosemary and thyme, salt and pepper to taste. Bring to boil. Lower heat, return beef to pot, cover and simmer on low for 2 to 3 hours.