Whoops… I thought I had it viewable. I’ll try to fix that, but I’m pretty clueless when it comes to tech stuff. Anyways, it’s AgentFinn@gmail.com in case I don’t answer all of your questions here. This should be a short hijack in any case.
(My apologies Alessan if this tangent is too long for your tastes. If you require, I’ll send ya a mountain dew to make up for it:))
Actually, we always used plain ol’ NY tap water. I’ve often heard NY water credited with making the pizza and bagels so good… Although there might also be a miscommunication here. Although I boiled and then baked the bagels, I never made the dough from scratch; we had a guy who’d come in at four in the morning to do that. I’d imagine that one would of course mix water into the dough, but once the dough is made you don’t need to do anything special to the water you boil it in. I’d imagine that using honey, malt, or potato starch would yield a different flavor, but I have to admit that I’ve never tasted one of those bagels. In specific, using potatos would probably yeild a product somewhat similar to potato bread… which I love. Try it and tell me how it turns out 
Here are a bunch of recipes They all seem to vary a bit, but a good few do recomend putting sugar or malt or honey in the water bath. Personally my favorite bagels are salt, everything, garlic, or sesame bagels, and I think that all of those with the exception of sesame work best when they’re not really sweet. You could also probably achieve a similar result if you glazed the bagels before baking them.
I found that the longer you boiled them, the less dense they became. I would wager that making the original dough less dense would also influence the final product. Adding more yeast and letting them rise longer would probably yield fluffier bagels.
Sounds tasty. Bagels can be modified by a rather large degree and still be good. Add egg and onion to the dough, change the wheat flour for rye flour, etc…
I suppose it depends on how hot you had the water and maybe even the size of the pot you’re boiling it in… as I was working at a bagel joint, we prepared large batches in a big ol’ cauldron type thing. I just got to the point where I’d be able to tell when a bagel was done by its consistency, and the texture of its outside. My best advice would be to experiment a bit. You don’t want the dough to get runny, or the outside of the bagel to really start cooking, just toughen up a bit.
I’m sure you can add too much yeast, but since I was in charge of boiling and baking the dough and not making it, I’m afraid I can’t give you better advice than that.
Pretty much, yeah. They’ll expand a little bit when you boil them, and a bit when they’re baked… I guess the best advice I’d have is again to practice a bit until you can eyeball it. When you’re holding the dough before you boil it, it should hang together and feel somewhat solid in your hands.