So first you pick and cook the beautyberries, then you strain them and cook them again, and finally, you can them in jars, as you can see Gretchen doing in the video linked through the little picture to the right.
Here is one batch of beautyberry jelly jars:
Pictures and preserving of beautyberry, Callicarpa americana, by Gretchen Quarte rman, Lowndes County, Georgia, 17 Oct 2010
-jsq