Tender chunks of beef slow-simmered with potatoes, carrots, and onions in a rich Guinness-spiked broth - this is the St. Patrick's Day dinner that warms your soul. Thick, hearty, and impossibly comforting. One bowl and you'll understand why the Irish perfected stew.
Pat the beef cubes very dry with paper towels and toss thoroughly with the flour, salt, and pepper. Browning dry, seasoned beef gives a rich crust and deep stew flavor.
Heat olive oil in a large Dutch oven over medium-high heat. Brown the beef in batches, 3–4 minutes per side, making sure not to overcrowd the pan. Proper browning develops complex flavor (Maillard reaction) and prevents soggy stew.
Add onion, carrots, and celery to the pot and sauté until softened and golden at the edges, about 6–7 minutes. This step draws out sweetness and intensifies the vegetable base.
Stir in tomato paste and cook for 1 minute, then pour in Guinness to deglaze, scraping up all the browned bits. Simmer for 5 minutes to mellow stout bitterness and build a deep, malty broth foundation.
Return beef to the pot. Add potatoes, bay leaves, thyme sprigs, and beef stock. Bring to a simmer over medium heat, then reduce to low, cover, and cook for 2 hours. Low, slow simmering gently tenderizes the beef and melds flavors without toughening meat.
Remove bay leaves and thyme stems. Stir in frozen peas and simmer uncovered for an additional 10 minutes. The stew should be thick, vegetables tender, and beef easily pierced with a fork.
Taste and adjust seasoning with additional salt and black pepper. Let rest 10 minutes before serving — this helps the flavors meld and thickens the stew further.