Want to Make Buttermilk?
Easy Peasy stuff here, folks!
Grab a clean quart sized mason jar and fill it with milk (preferrably whole.) Leave about an inch beneath the rim. Add about 1/4 cup of buttermilk (storebought or some from a previously made batch), give it a quick stir, cover with a clean cloth and secure it with a mason jar ring or rubber band. Leave on the counter for a day or two. My buttermilk seems to take about 48 hours to set up. In warmer weather, it may happen faster.
When its thickened up, add a cap to your jar, pop it in the fridge and bring it down to fridge temp before using. Homemade buttermilk has a certain stringy quality to it, unlike storebought. Dont let this scare you.
Use your buttermilk for breads, pancakes, waffles, biscuits, dressings, or any of your favorite buttermilk recipes. Remember to save some from each jar for your next batch. I have forgotten more than once, and it is rather frustrating to spend money on buttermilk if you dont have to!