Abstract: A bag formed of flexible thinwall sheet material for washing and/or dewatering comestibles having an upper compartment and a lower compartment connected by at least one opening. The bottom of the lower compartment is formed by a zipper-type closure. The members of the closure resist separation under elevated hydrostatic pressure generated in the lower compartment by centrifugal force. The closure may include a slider for providing controlled engagement and disengagement of the members, to permit use of the bag both for washing and dewatering.

Abstract: A method of dewatering food items, such as salad greens. The method comprises the steps of placing the food items in a compartment formed of flexible thinwall sheet material, said compartment having an open top and an opening opposite the open top sized to permit passage of liquid but substantially to prevent passage of food items therethrough. The compartment is twirled by its open top to cause water from the food items to be expelled through the opening by centrifugal force.