Start by setting your oven's temperature to 175°C (350°F) before you begin. Ensure all necessary cooking utensils are prepared and within reach. This promotes uniform heat distribution throughout the cake during baking. Grease a 9x13-inch baking pan or line it with parchment paper to prepare it for use. This technique ensures the cake won't adhere to the pan and simplifies the post-baking clean-up process.
In a large mixing container, take two units of multipurpose flour and mix in one and a half measures of sodium bicarbonate and ¼ teaspoon of salt. Employ a whisk to combine the dry ingredients thoroughly, ensuring they are well-integrated and evenly distributed. Sifting or whisking the dry ingredients ensures they’re evenly distributed and helps your cake achieve a fluffy texture
Combine two large eggs and one cup of granulated sugar in a separate container. Beat the mixture thoroughly until it becomes light and fluffy, taking on a pale hue. Combine 1 cup of unflavored kefir, ½ cup of cooking oil derived from plants, and 1 teaspoon of vanilla flavoring. Mix these ingredients thoroughly. The cake's texture and taste are enhanced by these components, which provide both hydration and enhanced flavor.
While continuously mixing, slowly incorporate the dry components into the wet blend, using gentle motions throughout the entire process. Blend the components together with care as you continue to integrate them. Stir gently until the batter is smooth. Be cautious not to overwork the batter, as excessive mixing can result in a heavy, compact cake.
Transfer the cake mixture into the greased baking dish. Spread it evenly to ensure consistent cooking across the entire surface. Bake the mixture in the oven for about 25 to 30 minutes until it is fully cooked. To check if it's done, insert a toothpick into the middle of the baked item. When the toothpick comes out without any batter clinging to it, the baking process is complete.
Allow the cake to rest in the baking pan for approximately 10 minutes to partially cool before removing. Once cooled slightly, transfer it to a cooling rack to allow it to cool completely. Allowing the structure to cool is crucial for stabilizing its form and facilitating easier frosting or cutting.
Optional : To create the glaze, combine 1 cup of confectioner's sugar, 2 tablespoons of kefir, and ½ teaspoon of vanilla extract in a bowl. Mix these ingredients thoroughly until well blended. Drizzle over the cooled cake and spread evenly with a spatula.