If you live in another country then you must follow the law of that country.
I don't know where you live.
However, if you live in the UK you must follow the law of the UK which I detailed in my previous post.
Either way, , that doesn't change my last paragraph -
viz
I agree, it would be unwise and irresponsible to allow an 11 year old to brew an alcoholic substance.
There are plenty of other things in science that he can safely play with and wine and beer are not two of them
JMHO as a mum and grannie