Question: does parchment paper soak up grease?
Answer: Parchment is super-strong, even when wet. Parchment is made by running sheets of paper through a sulfuric acid bath, a-process that makes the paper strong even when it gets wet or hot. The surface of parchment, also called sulfurized paper, is hard, smooth, and impermeable so it won't soak up grease or moisture.