leatherback wrote:

It is about cow milk. More specifically, the Whey, so the non-lactose part of it:
www.alice.cnptia.embrapa.br/bitstream/doc/15597/1/2008AP15.pdf

Thanks LB, looks like my mind was in the right direction. : )
From the link I’ve got “Internal server error” : (

Tidbit for science (That kind of geek I am..):
From Whey you get Lactic acid through an electrodialysis process.
Lactose is a disaccharide (kind of sugar..).

So yes, just regular pasteurised cow milk

... right, nobody mentions the word mildew here anymore, now my hornbeam has it...
but i will apply my usual mix and will get rid of it in no time