Create your own homemade cultured buttermilk with this simple and satisfying recipe.
Pour the milk into a clean jar.
Ensure the jar is clean to avoid contamination.
Add the buttermilk to the milk and stir well.
Mix thoroughly to distribute the starter evenly.
Cover the jar with a clean cloth and let it sit at room temperature for 12-24 hours.
Place the jar in a warm spot to encourage fermentation.
Once thickened and tangy, refrigerate the buttermilk.
Refrigeration stops the fermentation process and preserves the buttermilk.