The length of cake-making training varies with many factors, including the content of training courses, students' foundation, learning time and so on. Generally speaking, it takes several weeks to learn the training course of making cakes.

1. According to the course content, some cake making training may include basic baking skills, cake decoration skills, and the purchase of raw materials. It is very important for beginners to master these basic knowledge. This kind of training usually takes several weeks to a month.

Second, students who have a certain foundation may want to further improve their skills or learn more complicated cake-making techniques. Such students may need to study for a longer time, usually a few months or so, before they can master all kinds of skills and recipes skillfully. However, it should be noted that this is only an approximate time reference. The actual time required may be different due to individual learning speed, daily learning time and teacher's guidance. For example, some people may have mastered the skills of making cakes in a short time, while others may need longer time. Therefore, the specific study time needs to be determined according to the actual situation of individuals.