This is the easiest way to make greek yogurt at home using just a crockpot and two ingredients!
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Ingredients
1/2gallonfull-fat, grass-fed milk
1/2cupgreek or regular yogurtfrom a previous batch or store-bought with active live cultures
Instructions
With the crockpot OFF, add the milk to the crockpot. Once added, cover and turn on LOW for 2.5 hours.
After 2.5 hours, turn the crockpot OFF and unplug it. Keep the crockpot covered and allow to cool for an additional 3 hours.
While the milk is cooling for 3 hours, measure out 1/2 cup greek yogurt and allow it to get to room temperature. (This is to ensure that your greek yogurt doesn't make the milk cool too quickly when added into the milk and hinder fermentation.)
After 3 hours, add the greek yogurt to the milk and give it a quick whisk. Cover the crockpot (while still turned OFF) and wrap it with a large dishtowel to help keep it insulated. Let this sit for 12-18 hours. (The longer you let it sit and ferment within that range, the less lactose the final product will contain.)
After sitting for 12-18 hours, you should now have yogurt. To make your yogurt into greek yogurt, we have one final step.
Pour your yogurt into a greek yogurt strainer (see the one I use listed in the equipment section below). This will remove excess lactose and water to make for a final greek yogurt product more concentrated in protein. Cover and allow to strain in the fridge for 12-18 hours (depending on how thick you like your greek yogurt).
The top, strained part is your greek yogurt. Pour this in glass containers and store in the fridge. The bottom part is "whey water". You can toss this or use it for future recipes (I'm currently experimenting with making homemade ricotta cheese from it).
As the greek yogurt is a fermented product, it should last for a few weeks in the fridge. You can also double this recipe if you have a larger crockpot.
Notes
The specific nutrition facts will vary based on how long you ferment and how long you strain it, but these are the "average" nutrition facts you can expect per cup.