Prepare the necessary ingredients. The cocoa should be of high quality, dark in color, and have a rich chocolate aroma. Use vegetable oil without a strong scent.
Pour sugar into a bowl. Add cocoa and mix.
35 g sugar, 20 g cocoa
In a separate container, mix flour and baking powder. Add to the sugar and mix.
45 g flour, ¼ tsp baking powder
Pour in water and vegetable oil and mix until the batter is smooth.
55 g water, 15 g vegetable oil
Fill a glass or cup with the batter. Keep in mind that the cake will increase in size, so leave a couple of centimeters to the edges. It is not necessary to grease the walls with oil beforehand. Send it to the microwave for 2 minutes. The final cooking time depends on the power and size of the glass, it may take a little more or less time. The cake should remain slightly moist. Therefore, to prevent it from drying out, it is advisable to visually check the condition every 30 seconds.
The glass will get very hot during cooking, so remove it from the microwave using a towel or potholder. If desired, sprinkle with powdered sugar or drizzle with melted chocolate on top. The cake turned out not dry, moderately sweet, with a rich chocolate flavor.