Recipe shared at our fermentation workshop. It works best with whole non-homogenised organic milk, like the lovely stuff now being supplied by Locavore from Mossgiel Farm in Ayrshire. The yoghurt can be strained overnight to make cream cheese / labneh, just add a bit of salt, and try mixing the cream cheese with chopped wild garlic. Delicious!
Natural Yoghurt recipe
From: The Lost Art of Real Cooking by Ken Albala and Rosanna Nafziger
1 litre of organic whole milk
1 tablespoon natural live organic yoghurt at room temperature
- Over a low flame, slowly heat the milk in a non-reactive pot to 180˚F. The milk should reach a hearty scald – hot and foamy but not quite simmering. If you are going to make yoghurt a lot it’s worth buying a cheese thermometer, you can also use a jam thermometer if you have one.
- Stir it occasionally as it heats, remembering that the faster you heat the milk, the more grainy bits of overheated congealed protein you’ll find in your yoghurt. When it’s done, pour into large glass jar to cool.
- Let it sit until cooled to 110˚F, or cool a bit quicker by placing pan in a cold water. At this point take a spoonful of milk from the jar and mix with a spoonful of live-culture yoghurt, then stir this back in. A tiny amount of yoghurt can culture a large amount of milk, so you really don’t need much, but it’s important that it’s evenly distributed.
- Put lid on the jar and place in a cool box wrapped in a tea towel. Fill four other jars with very hot water and put them next to the yoghurt. This creates your incubation chamber. Close the cool box (better described as the warm box) and leave for 12-24 hours. Some people culture their yoghurt in a wide mouthed thermos flask which has the same function of keeping a steady temperature but it is then a bit difficult to transfer yoghurt to the fridge so I prefer to do it in jars.
- Don’t disturb the yoghurt too much while it’s culturing. Avoid the temptation of jiggling the pot to see how thick it is! After 12 hours check to see if it’s set and refrigerate. If it’s still not set, refill the jars of hot water and leave for up to another 12 hours.
- If you like thick greek yoghurt, then you can strain the yoghurt for an hour or two in a muslin cloth. Remember to save a little yoghurt for making the next batch.