This is why I dislike bread yeast. All I have to do is look at my fermenter and bread yeast gets kicked up.
However, I will say that in my experience you can certainty make booze with bread yeast.
I think edwort's apfelwein is missing some of the natural 'nutrients' that come with beer wort. I use yeast nutrient and found that it tastes better faster. But to be honest, I like to let my apfelwein bulk age.
I agree with Arpolis...in my experimentation you need at least 1/4 fruit juice to make any real difference. 1/2 is better. Aside from a cyser, I have not tried a 100% fruit juice mead.