Do cooking classes need MOE certification for DTV visa application in Thailand?

If you want to use a cooking class for the soft power category for the DTV: does the cooking school have to be certified by the MOE (ministry of education) or is it enough to have a booking confirmation of a multi-week class and the payment slip for it (maybe id and business registration of the owner/company?)? anyone got any experiences with this? Any other documents needed in case of the cooking class route besides the financial proof? preferably applying via eVisa in germany but a thai neighboring country would also be an option. Thanks in advance.