Add 1 tablespoon olive oil to pan, and swirl to coat.
Add beef to pan, and cook for 3 minutes, browning on all sides.
Remove beef from pan.
Add the remaining 2 teaspoons oil to pan, and swirl to coat.
Add chopped onion, carrot, mushrooms, and thyme sprigs; saut for 4 minutes.
Add tomato paste and minced garlic; saut 1 minute.
Add beer; cook 1 minute, scraping pan to loosen browned bits.
Combine beef stock and flour in a small bowl, stirring with a whisk.
Add stock mixture to pan. Cover, reduce heat, and simmer 15 minutes. Stir in beef, and cook 1 minute or until thoroughly heated. Stir in soy sauce. Discard thyme.