Oven bags, commonly referred to by a brand name, are typically made of heat-resistant nylon or polyester film. These bags vary in size depending on their intended use, from small poultry to large cuts of meat. A single bag itself adds negligible weight to the overall cooking process, typically less than an ounce. The significant factor is the capacity of the bag, which is typically measured in pounds of food it can hold. Common sizes range from 10 pounds to 25 pounds or even larger.
Knowing the weight capacity of these bags is essential for several reasons. Choosing the correctly sized bag ensures the food cooks evenly and prevents spills or breakage during cooking. It also contributes to food safety by preventing raw meat juices from contaminating the oven. Historically, these bags were introduced to simplify cooking, retain moisture, and reduce oven cleaning. Their importance in contemporary kitchens remains significant due to these benefits.