Adjust oven rack to lower-middle position and heat oven to 375 degrees. Mix flour, sugar, baking powder, and salt in a large bowl. Add beer (no sips!) and stir with a fork until just combined. Turn dough onto a floured surface; knead quickly to form a ball. Place bread on a baking sheet and confidently slit an X on top with a serrated or very sharp knife. Brush loaf with egg wash. Bake until golden brown, about 45 minutes. Transfer to a wire rack to cool. Serve!
Recipe by Three Many Cooks at https://threemanycooks.com/recipes/nibbles-and-apps/beer-bread/