Sweets and drinksPuddingsEurope and North America40 minutes prep, 10 minutes cooking, 14 hours culturing, about 14 hours 50 minutes in total
This Greek yogurt uses only what is already in the kitchen: a liter of oat milk, a jar of starter and the Warm setting on a rice cooker. The finished yogurt is thick and smooth enough to hold a spoon upright, with a gentle tang and a clean finish.
The tricky part is the temperature when the starter goes in, since heat kills the culture and cold milk never sets. The number to remember is 35 to 40 degrees C, warm to the touch but never hot. A common problem is equipment still damp with tap water or traces of grease, which turns the batch slimy and watery.
This batch weighs about 1.1kg, at roughly 50 calories per 100g.
Method
Let 1 liter plain oat milk and 150g yogurt starter come to room temperature. Rinse the bowl, spoon and pot with boiling water, then dry them completely.
Heat the oat milk over medium heat, stirring a few times so it does not settle on the bottom. Turn off the heat as soon as steam rises.
Cool the milk to about 35 to 40 degrees C. Once it feels warm to the touch, stir in 150g yogurt starter, moving the spoon gently in one direction until even.
Pour the mixture into a prewarmed rice cooker and close the lid. Rest for 4 hours, switch on Warm for 1 hour, unplug and rest for another 6 to 8 hours.
Line a stainless steel colander with clean cloth, set it over a bowl and pour in the yogurt. Strain in the fridge for 2 to 4 hours to drain off some of the whey.
What stays on the cloth is the Greek yogurt. Transfer it to an airtight container and keep it chilled.
Tips
Milk held at a boil forms a skin on top and separates more easily.
Longer straining gives a thicker result, and 4 hours brings it to a spreadable, cream cheese texture.
The drained whey is worth keeping for sour soups or in place of water in bread dough.
A starter straight from the fridge slows the culture down and leaves the batch slimy, so let it warm up first.
Newer rice cookers run hotter on Warm, so 30 minutes is enough before unplugging.
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