We use a no. 1 long grain rice, preferably Thai with at least a year on it, for juk. 9 or 10 water to 1 rice by volume, plus a little salt. About a tsp of table salt, to 1 cup of rice. I know the stove and pot well enough to know how to set the flame so it will simmer and never boil -- although if it boils for a few minutes, it isn't that big a deal. It takes about an hour for a decent textrue, and about 75 to 90 minutes for really excellent. Then I finish it with a little Maggi seasoning sauce.
We like all sorts of things in the congee. Dried bok choy, dried scallops, dried shrimp, pork foo, century egg, chicken, skirt or tips trimmed from spare ribs before smoking, hard boiled egg, minced fresh beef, sliced fresh beef, minced fresh pork, fish fillet, preserved fish, you name it. I do whatever pre-prep is necessary (if any) before adding the flavorings.
It's a good idea not to get too complicated though -- keep it down to a couple of things max. I mince some chives and serve them along with a little crisp fried noodle to dress it.
When we first started fooling with it we tried the slow cooker, loading up the congee with quantity or variety of flavorings, slow cooking them along with the juk, and so on -- but could never make it work. Not that these things don't for other people. In the end, we settled on the simple techniques I told you about.
BDL