Method:
Combine flour with salt and pepper. Add beef cubes and toss to coat meat, shaking off excess.
In a heavy Dutch oven with a tight fitting lid, heat butter or oil. Brown meat in batches in a single layer on all sides, then remove it with a slotted spoon. Add onion and garlic, and cook for five minutes, stirring frequently. Add chopped carrot, celery, bay leaves and thyme, and cook covered for 5 minutes, stirring occasionally.
Return meat to the pan, and add beer and tomato paste. Bring to a boil, lower the heat, and simmer partially covered for about 1 1/2 hours or until the meat is fork tender.
Add parsnips, carrot and potato chunks and continue to simmer the stew for an additional 30 to 40 minutes, or until vegetables are tender.