Description
Guinness Onion Soup is a rich and savory twist on the classic French onion soup, infused with the deep flavors of Guinness stout and Irish whiskey. Slowly caramelized onions build a sweet and robust base, enhanced by tender herbs and topped with toasted baguette slices and melted Irish cheddar cheese for a comforting, hearty meal perfect for chilly days.
Ingredients
Soup Base Ingredients
- 1 tablespoon olive oil
- 1 tablespoon (15 grams) unsalted butter
- 3 large onions, peeled and thinly sliced
- Salt and pepper to taste
- 2 garlic cloves, minced
- 1/4 cup (60 milliliters) Irish whiskey
- 1 1/2 cups (355 milliliters) Guinness stout
- 6 cups (1.5 liters) beef stock
- 1 tablespoon Worcestershire sauce
- 3 sprigs fresh thyme
- 1 bay leaf
Topping and Garnish
- 1 baguette
- 8 ounces (227 grams) Irish cheese such as Dubliner, shredded
- Fresh parsley or chives for garnish, optional
Instructions
- Caramelize the Onions: In a large pot, heat the olive oil and butter over medium-low heat until the butter melts. Add the sliced onions and a pinch of salt, then cook gently, stirring occasionally, for about 45 minutes until they are softened and have turned a deep golden brown color. Adjust heat as necessary to prevent burning and allow them to caramelize slowly.
- Add Garlic: Stir in the minced garlic and cook for 30 seconds to 1 minute until fragrant, being careful not to let it brown.
- Deglaze with Whiskey and Guinness: Increase the heat to medium-high and pour in the Irish whiskey. Stir and scrape any browned bits from the bottom of the pot. Then add the Guinness stout and simmer until the liquid is reduced by half, concentrating the flavors.
- Add Broth and Herbs: Pour in the beef stock, then add Worcestershire sauce, fresh thyme sprigs, and bay leaf. Season with salt and pepper to taste. Bring the mixture to a boil.
- Simmer Soup: Reduce heat to a gentle simmer and cook for another 30 minutes, stirring occasionally. This allows the flavors to meld beautifully. Remove the bay leaf and thyme stems before serving.
- Prepare Toasted Baguette: While the soup simmers, slice the baguette into 1/2 inch (1.25 cm) thick slices. Toast them under a broiler until they are golden and crisp.
- Assemble and Broil: Divide the hot soup into broiler-safe bowls. Top each bowl with one or two toasted baguette slices, then pile generously with shredded Irish cheddar cheese. Place the bowls on a rimmed baking sheet and broil until the cheese melts and bubbles with a golden brown crust.
- Garnish and Serve: Optionally garnish the soup with fresh parsley or chives. Serve immediately, accompanied by the remaining baguette slices for dipping.
Notes
- Be patient when caramelizing onions; low and slow heat builds deeper flavors.
- Use good quality Irish cheddar cheese like Dubliner for authentic taste.
- Broiler safe bowls are essential for melting the cheese under high heat.
- This soup pairs beautifully with a crisp green salad for a fuller meal.
- Leftover soup can be refrigerated for up to 3 days and reheated gently on the stovetop.
