I'm just getting started with homebrewing (about to do my third batch), and both times prior I've had trouble getting a good rolling boil on my gas kitchen stovetop. I'm not really doing a large batch, a little over 4 gallons in the kettle, but I understand even this is a lot for a stove. I can reach a good boil, but its usually after a good 30 minutes. Should I consider this point to be the start of my boil (i.e., let it go 60 minutes from this point, add my first bittering hops, etc), or does the fact that its been cooking (albeit not boiling) for about 30 mins already change things? edit: I've heard people tell me "you don't need a good rolling boil, just some bubbles/movement" but I don't even get close to that in the first half hour....the temp is usually about 180-190 degrees for a while.