Classic Snow Cake

Ingredients

• 0.25 cup Unsalted butter, softened (Equivalent to 4 tablespoons or 56 grams)
• 1 cup Granulated sugar (Equivalent to 200 grams)
• 0.5 cup Whole milk (Equivalent to 120 ml)
• 1.67 cups All-purpose flour (Equivalent to 1 and 2/3 cups or approximately 210 grams)
• 2.5 teaspoons Baking powder
• 2 units Large egg whites (From 2 large eggs)
• 1 teaspoon Vanilla extract (Original recipe suggests 1/2 tsp vanilla or 1/4 tsp almond extract. Modern standard for vanilla is often 1 tsp for a more pronounced flavor.)
• 0.25 teaspoon Salt (A pinch of salt is often added to balance sweetness and enhance flavor in cakes, not specified in original but good practice.)

Instructions

1. 1Preheat your oven to 350°F (175°C). Grease and flour a 9x5 inch loaf pan or an 8-inch round cake pan. Set aside. Separate the egg whites from the yolks, ensuring no yolk gets into the whites.
2. 2In a medium bowl, whisk together the all-purpose flour, baking powder, and salt until well combined. Sift the mixture if desired for a lighter cake texture. Set aside.
3. 3In a large mixing bowl, using an electric mixer, cream together the softened unsalted butter and granulated sugar on medium speed until the mixture is light, fluffy, and pale in color, about 3-5 minutes. Scrape down the sides of the bowl as needed to ensure even mixing.
4. 4Beat in the vanilla extract into the creamed butter and sugar mixture until just combined, about 30 seconds.
5. 5With the mixer on low speed, gradually add the dry ingredients to the butter mixture in three additions, alternating with the milk in two additions. Begin and end with the dry ingredients. Mix until just combined after each addition, being careful not to overmix, which can lead to a tough cake.
6. 6In a separate, very clean bowl, using clean beaters, whip the 2 large egg whites on high speed until stiff peaks form. The whites should hold their shape when the beaters are lifted. Be careful not to overbeat, as they can become dry.
7. 7Gently fold the whipped egg whites into the cake batter in two additions using a rubber spatula. Use a light hand to incorporate them without deflating the air, as the egg whites contribute significantly to the cake's light and airy texture.
8. 8Pour the batter into the prepared pan and spread evenly. Bake for 45 minutes, or until a wooden skewer or toothpick inserted into the center comes out clean. The cake should be lightly golden on top and spring back when gently touched.
9. 9Let the cake cool in the pan on a wire rack for 15 minutes. This allows it to firm up before handling. After 15 minutes, carefully invert the cake onto the wire rack to cool completely. This typically takes another 30 minutes to an hour. Once cooled, slice and serve, or frost as desired.