Gelatin for fining

I used to do this, way back when, but haven't done it in a long time. It turns out it's easy and really helps with clarity. Here's the process for 10 gallons of beer:

1. Transfer beer from fermenter to kegs.
2. Pour 1/2 cup water into a measuring cup. 
3. Pour 1 packet of powered, unflavored gelatin into the cup and let sit for a minute or so.
4. In the mean time, heat 1 cup water in the microwave for 1 1/2 minutes.
5. Pour the hot water into the measuring cup on top of the gelatin.
6. Stir until the gelatin is dissolved.
7. Pour 3/4 cup into each 5 gallon keg, purge and carbonate. 

Beer should be super clear in a day or two.