Good question. I don't know. I guess I just prefer looking at clear wort and feel like i did a nice job. The wort going to the BK is now pretty clear after some issues, so I guess I want it leaving the BK as clear..
But. The first brew on the system got pretty ugly, the wort looked terrible yet it's the clearest beer I've made.
So it's mostly about esthetics.
Yes. But I feel I have a good hot and cold break. It's the hop-matter which hazes the post boil wort. My thought is that less trub material from start = cleaner beer. I cold crash with gelatine and most of the beers turn out very clean, but it's just the idea about doing it as proper as I can from start to finish instead of fix it in the mix (I'm a soundguy).
But, the topic was about what this does to the flavor.
The brewing process itself is a pretty ugly one, the most imporatant steps for clarity are:
1: Vorlauf before you runoff your mash, this helps to set the grainbed and limit the amount of particle making it to the BK.
2: Getting good hot break. When you start the boil make sure its vigerous, a light boil will cause a small break and thus leaving protiens/lipids in suspension.
3: Fining: I always use a fining agent to help with the final product. 1 tsp of irish moss in the boil at 15min left is a good mark. Some use gelatin when racking to keg to gelatinize solids in suspension.
4: Cold Break (VERY IMPORTANT) When chilling you want to get down to pitching temps as fast as possible. Its at this point where the protiens/lipids start to reattach themselves to the finished wort molecules (Causing protien haze). A rapid cooling will discharge these molecules and make them drop out.
5. FV racking. Some say its important to limit trub entering the FV but ive been brewing for over 3 years and cannot tell the difference between beers ive limited trub in the FV and ones i poured it all in.
6: Time (MOST important) After doing all the steps i mentioned in success the only thing left is to wait. Let the yeast do there thing, i never touch a beer before a 2 week primary. At this point im left with a crystal clear beer and a nice compact yeast cake on the bottom. Rack from the middle of the carboy and avoid the cake, tilting the bottle, as you get to the bottom.
Hope this helps!
Cheers!