More than just a millennial foodie trend, pickling has roots that go all the way back to ancient Mesopotamia. What was once a tool used to preserve foods in the harshest of climates is now filling mason jars in refrigerators all over the country. On today's episode of Serving Up Science, Science Writer Sheril Kirshenbaum and WKAR's Karel Vega dive deep into the origins of pickling, and give some tasty advice to amateur picklers.