When bittering, taking for example a Czech pilsener, any reason to persist with lower A/A - e.g. Saaz instead of heaps less of a higher A/A such as Magnum?
Money's too tight to mention as the song says, so just looking at my cost savings. If there is a good reason not to load up on high A/A hops for bittering, then I'd pay the extra.
Is there really any flavour/aroma left when boiled for an hour? For that matter, can you degrade the bitterness by boiling too long? (e.g. denature the chemicals or different rate of evaporation etc) or conversely have unintended issues (aside from less bitterness) by not boiling for long enough?
Oh yeah, why are mountains? And how come girraffes?
