Let me go on record and say that all the hype is true. Homemade butter really is that good and I cannot believe I waited this long! From start to finish the whole thing took about 10 minutes and I think I might never buy store-bought butter again. If you haven't tried this yet, do it right now! Don't have a stand mixer? Angry chicken has a great tutorial using a food processor which I haven't tried myself, but plan on testing, once I polish off my current stash.
A few notes to consider:
*Amy Karol of Angry Chicken recommends leaving the cream out to get to room temperature before beginning, which I didn't because I was impatient. While it didn't seem to make too much of a difference, I might do that step next time and see if I get different/event better (hard to imagine) results.
*Most of the recipes I read called for unhomogenized, unpasteurized heavy cream but given that I live in NYC, and not near a farm, that was pretty hard to come by. After trucking over half the city, I did manage to find unhomogenized, low-pasteurized heavy cream from Evan's Farmhouse Dairy at Murray's Cheese and it looked pretty great to me. There was a thick layer of solid (clotted?) cream at the top of the bottle, and below that layer it was quite viscous. Reminded me of the heavy cream I used to get when I was a kid in Melbourne and you could get you milk delivered to your door in glass bottles with foil caps.
*Many people skip adding ice water after straining and kneading it, but from what I understand, it really makes quite a difference in getting all the excess buttermilk out, which ultimately means a longer shelf life for your butter. The idea of adding water into the very thing I was trying to remove excess moisture from, freaked me out a bit at first, but if you think about it, it really does make sense. The key is that the water has to be cold - thus the ice - as it helps to solidify the fat that has been warmed during the whipping process. Water repels from fat, so that act of beating them together will help dispel the remaining buttermilk you couldn't squeeze out without the water absorbing into the butter.
Sweet cream butter (foreground); Sweet cream butter with grey salt (background)
Here's a useful You Tube video tutorial:http://www.youtube.com/watch?v=CQ4Q9obbc-4
The Wednesday Chef has a great post on making butter. She also links to another blogger, The Traveller's Lunchbox, who has a recipe for Cultured Butter, which I think I need to add to my recipe to-do list. It sounds awesome! Oh, and there's also this article that the New York Times just ran.