Originally Posted by Soviet
I'd love to get others' input as well.
The only thing I would add to Yooper's post is that I sometimes do this when I want to have some of the batch in the keg and some in bottles. So I:
1. Have the keg sanitized.
2. Get the sterilized sugar solution ready. Since I am going to also bottle, I use the normal to-be-bottled sugar amount.
3. Add the sterilized sugar solution to the empty keg.
4. Rack from the source (primary or secondary or keg - I usually secondary/condition in a keg) into the target keg on top of the sugar solution. This will mix it up nicely.
5. When racking is complete, close the keg, add co2/vent/add co2/vent. Add enough co2 to be able to push beer from the keg to a picnic tap and into your bottling tube.
6. Fill as many bottles as you want. I typically turn the co2 off and then on when pressure gets too low to flow. This way the flow into the bottles is slow.
7. When done with the bottles, add enough co2 to ensure the keg has a good seal. Set it aside at the same place where you are letting your bottles carbonate.
What's nice about this is you can also vent pressure from your keg if you feel it is carbonating at too high of a pressure. One way to tell is using something like this: http://www.williamsbrewing.com/KEG-PRESSURE-TESTER-P715C237.aspx
Note that the above technique isn't the only way to do this. I also sometimes just carbonate the keg with co2 and then fill bottles as needed from the carbonated keg using this technique: http://www.homebrewtalk.com/f35/we-no-need-no-stinking-beer-gun-24678/
. While this works fine, it seems to me to be more work (at least so far in my experience).
What I do depends on whether I want yeast in the bottles/keg and a bunch of other factors, the biggest being my laziness at the moment. (It is SO easy just to carbonate in the keg with co2.)
After you get the keg carbonated, you then can chill it/cold crash it and most of the yeast from the carbonation will fall and you get it out of the keg in the first few glasses you take from the keg.
Hope this helps.