I happen to have made some this past weekend
I've been making it for a few months now and slowly building up the courage to let the cream ripen fully. This weekend I think I nailed it.
Raw cream, when left to stand at room temperature gets thicker and thicker and starts to taste sour but not like store bought sour milk. The flavour is more like yoghurt when you make it at home, not store bought yoghurt one tends to get in North America (too sweet and goopy).
The end product is a butter with a very distinct acidic bite to it that counteracts the fattiness of the butter. This is from lactic acid in the butter and it brings to life the butter, and I think enhances the flavour.
Think of the difference between olive oil dressing on a salad, and a vinaigrette. The acid in the vinegar cuts through the oil, and lifts the entire dish.
I get the milk and skim it. I use the skim milk for my tea, cereal etc and I freeze the cream.
Once I have collected about 1/2 a gallon of frozen cream, I let it thaw. I get a big seperation of thick cream and milky watery liquid (skimmed cream is pretty thin compared to store bought whipping cream).
I separate the thickened cream from this liquid and let it sit in my churn for about 18-24 hours depending on what time of year it is.
I don't add any butter milk. There are
enough enzymes in the
raw milk to do the job by itself. A trick here is that the cream needs contact with the air to develop the lactobacillus bacteria so a shallow, wide container is better than a tall, narrow one.
I also cover the jar with a towel or paper towel so air can circulate.
When the cream is ready it will have set like in the video.
I stopped using a beater because of the mess it made. I also found my hand churn is about as fast as the beater anyway. A beater is designed to put air into a mixture but a churn is designed to send concussion into the cream. It is the shock wave that bursts open the protein encased fat globules and creates butter, not the presence of air.
I made my churn for about $2. It's a 1/2 gallon pickle jar with a hole cut in the lid. A dowel passed through the hole and attached to the end is a cross made from two pieces of flat
wood. I then pump the dowel up and down to make it go.
I typically churn 1/4 gallon of cream at a time but I could get away with 1/2 gallon because by the time the cream has thawed and I've separated it again, 1/2 a gallon of skimmed cream is reduced to about 1/4 gallon.