Piragi (Latvian Bacon Rolls) Recipe

Ingredients

• 1 1/2 cups lukewarm water
• 1/2 cup + 1 tablespoon sugar
• 1 tablespoon dry yeast
• 1 1/2 teaspoons salt
• 5 to 6 cups King Arthur Unbleached All-Purpose Flour
• 1/2 cup (1 stick) unsalted butter, softened
• Filling:
• 4 slices bacon
• 1 tablespoon butter
• 1 medium onion, chopped
• 1 pound fully cooked ham steak, diced in 1/4-inch cubes (2 cups)
• 1 teaspoon caraway seeds
• 1 teaspoon black pepper, or to taste
• Glaze:
• 1 egg, lightly beaten with 1 tablespoon water