I'm thinking about brewing my first batch of beer, probably from a
kit. However, I have a glass top range and I don't know if it will
work or not. It takes a long time to get up to boiling temperature and
I'm not sure how well it can maintain a constant temerature over a
period of an hour or so.

Here's my question: When testing my range would it be OK to use plain
water or should I be using sugar-water? And if so, at what SG/Brix?

Thanks,
CRWinemaker