The creaming mixing method is a technique where solid fat (such as butter, vegan butter, or shortening) and sugar are beaten together. As the sugar crystals move through the fat, they create tiny air pockets that can expand during baking. The extent to which this happens (influenced by factors such as how long you mix and the temperature + ratio of ingredients) has a direct impact on the final crumb structure of the cake, whether that’s light and fluffy or more finely aerated.
It's important that the fat is soft enough to allow the sugar to carve little air pockets into it, yet firm enough to hold air without those pockets. Ideally, we want to use fats that are around 65-75°F/18-24°C for this purpose.
Sugarologie cakes that use the Creaming Mixing Method typically have a moderately close network of crumbs with textures ranging from thick and creamy to moist and fluffy depending on the recipe. To learn more about the differences between mixing methods and how they influence cake structure, visit my Vanilla Cake Guide.