I've only done this twice, and only making my own wort from all-grain 10 gal batches. The first time, I didn't boil and got all the break, it was ugly, but it got the job done. The second time, I did a quick 10 min boil, followed by cooling enough to can(jar..), and I got a much clearer wort in the end. Not sure on the effect on the wort, but it looked nicer.
For What It's Worth. I can(Jar) in 4 oz, 16oz and 32oz jars, I add more than the recommended yeast nutrients(~4Tbsp/gal of starter), and make 1.060 starter wort and tend to dilute 1:1 with water to make starters. This leaves me with enough to start small, and step up if needed adjusting the mix as needed. Always had great take-off from dregs and other yeast samples.
Building my yeast bank now.
For What It's Worth. I can(Jar) in 4 oz, 16oz and 32oz jars, I add more than the recommended yeast nutrients(~4Tbsp/gal of starter), and make 1.060 starter wort and tend to dilute 1:1 with water to make starters. This leaves me with enough to start small, and step up if needed adjusting the mix as needed. Always had great take-off from dregs and other yeast samples.
Building my yeast bank now.