Hello,
Making my first 5gal batch of dead ringer and the instructions say bring the priming sugar and water to a boil and pour it into the bottling bucket. Then transfer your beer into the bucket. I feel like it should cool down before I transfer the beer into the bucket? No?
You are boiling 2 cups of water/sugar. By the time you add .5-1 gallon of beer, the priming solution will be at the same temp as the beer. You may kill 1-2% of your yeast. But there will be plenty to carbonate the bottles.
While not necessary to cool it, IMO it’s best practice. If you’re in a hurry, an ice water bath will cool down such a small volume to a reasonable temp in a flash.
I don’t cool it either. Just boil for 5 minutes or so to drive out oxygen. I pull it off the heat for a few minutes and then dump it into the bottling bucket and rack on top of it. The whirlpool from the beer going in mixes the solution nicely with the beer.
I cool, but I’m typically bottling just a small portion of my batch from a thin-walled PET jug, and PET can get unhappy if exposed to boiling liquids. If I was using a real bottling bucket, I wouldn’t bother.