Pub-Style Steak and Ale Pie

Ingredients

• 3 tablespoons water
• 1/2 teaspoon baking soda
• 3 pounds boneless beef short ribs, trimmed and cut into 3/4-inch chunks
• 1/2 teaspoon salt, for the filling
• 1/2 teaspoon pepper
• 2 slices bacon, chopped
• 1 pound cremini mushroom, trimmed and halved if medium or quartered if large
• 1 1/2 cups beef broth
• 1 large onion, chopped
• 1 garlic clove, minced
• 1/2 teaspoon dried thyme
• 1/4 cup all-purpose flour
• 3/4 cup beer
• 1 large egg, lightly beaten
• 1/4 cup sour cream, chilled
• 1 1/4 cups (6 1/4 ounces/177 grams) all-purpose flour
• 6 tablespoons unsalted butter, cut into 1/2-inch pieces and chilled
• 1/2 teaspoon salt, for the pastry

Method

1. Combine water and baking soda in large bowl. Add beef, salt, and pepper and toss to combine. Adjust oven rack to lower-middle position and heat oven to 350°F (175°C, conventional oven).
2. Cook bacon in large Dutch oven over high heat, stirring occasionally, until partially rendered but not browned, about 3 minutes. Add mushrooms and 1/4 cup broth and stir to coat. Cover and cook, stirring occasionally, until mushrooms are reduced to about half their original volume, about 5 minutes. Add onion, garlic, and thyme and cook, uncovered, stirring occasionally, until onion is softened and fond begins to form on bottom of pot, 3 to 5 minutes. Sprinkle flour over mushroom mixture and stir until all flour is moistened. Cook, stirring occasionally, until fond is deep brown, 2 to 4 minutes. Stir in beer and remaining 1 1/4 cups broth, scraping up any browned bits. Stir in beef and bring to simmer, pressing as much beef as possible below surface of liquid. Cover pot tightly with aluminum foil, then lid; transfer to oven. Cook for 1 hour.
3. Remove lid and discard foil. Stir filling, cover, return to oven, and continue to cook until beef is tender and liquid is thick enough to coat beef, 15 to 30 minutes longer. Transfer filling to deep-dish pie plate. (Once cool, filling can be covered with plastic wrap and refrigerated for up to 2 days.) Increase oven temperature to 400°F (200°C, conventional oven).
4. While filling is cooking, measure out 2 tablespoons beaten egg and set aside. Whisk remaining egg and sour cream together in bowl. Process the pastry flour and the separate 1/2 teaspoon pastry salt in food processor until combined, about 3 seconds. Add butter and pulse until only pea-size pieces remain, about 10 pulses. Add half of sour cream mixture and pulse until combined, about 5 pulses. Add remaining sour cream mixture and pulse until dough begins to form, about 10 pulses. Transfer mixture to lightly floured counter and knead briefly until dough comes together. Form into 4-inch disk, wrap in plastic, and refrigerate for at least 1 hour or up to 2 days.
5. Roll dough into 11-inch round on lightly floured counter. Using knife or 1-inch round biscuit cutter, cut round from center of dough. Drape dough over filling (it’s OK if filling is hot). Trim overhang to 1/2 inch beyond lip of plate. Tuck overhang under itself; folded edge should be flush with edge of plate. Crimp dough evenly around edge of plate using your fingers or press with tines of fork to seal. Brush crust with reserved egg. Place pie on rimmed baking sheet. Bake until filling is bubbling and crust is deep golden brown and crisp, 25 to 30 minutes. (If filling has been refrigerated, increase baking time by 15 minutes and cover with foil for last 15 minutes to prevent overbrowning.) Let cool for 10 minutes before serving.