He apparently does it all the time, he also adds a nip (don't know exact amount) of epsom salts to his beer. I only know he makes a good beer (even though I enjoy a wine or champagne more) and anyone who's had it thinks it good.
Now I need to get him brewing for me, especially after him telling me he made rhubarb wine in the past and how nice it was and he's done some bubbly things as well!! And you think after 11 years you know someone.
Let us know how it goes.