Homemade buttermilk adds DIY flair to mashed potatoes

Brown and yellow mustard seeds add a gourmet touch to a dish of handmade Mustard Butter and Buttermilk Mashed Potatoes. Enlarge photo

Matthew Mead/Associated Press

Brown and yellow mustard seeds add a gourmet touch to a dish of handmade Mustard Butter and Buttermilk Mashed Potatoes.

Want to truly elevate your mashed potatoes? Make them with your own butter and buttermilk.

The process is ridiculously simple. After culturing heavy cream, you run it through a food processor for several minutes until it separates into the solid fat (the butter) and the liquid (the buttermilk). If you have excess buttermilk, refrigerate it and use it to make pancakes the next day.

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