Yes, Thai cooking courses can qualify under the DTV Soft Power category.
There is no universal minimum course duration, as requirements vary between Thai embassies and consulates. However, a course lasting at least 6 months is generally recommended.
Not every cooking school or course will qualify. The provider must be a registered or licensed Thai business that can issue an official acceptance letter in your name and provide proof of its registration or licence.
For your application, you will generally need an acceptance letter, the school's registration or licence, a programme schedule showing the course dates, and proof of payment or deposit, in addition to the standard DTV documents.
You can find more detailed information about the DTV Soft Power requirements here:
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