In this web exclusive, Sara Moulton continues her Countdown to Thanksgiving with "Make Ahead" day. First up: tips on how to properly wash and stoer your greens. After washing in water, Sara advises you place your greens in sealable plastic bags lined with paper towels. "What the paper towel will do is absorb any excess moisture and keep your greens really nice and fresh," she says. Learn more tips on making vinagarette, blanching your veggies and measuring ingredients for your baked goods in the video, above!