A strainable bag with a hook-and-hook closure can include walls formed of a material having multiple layers of polymer or paper or mixtures thereof, and which can include at least one gusset. The hook-and-hook closure allows for liquids or gases to be vented from the bag, as well as for liquids to be removed from the bag interior. The bag can be formed into a full open mouth configuration for ease of filling and ease of dispensing product. The hook-and-hook closure also allows for an imprecise alignment of the closure track to substantially close the bag around the gusset area. Methods of using and manufacturing a strainable bag with a hook-and-hook closure for preparing various food products are also presented.