Ready to cook. US inspected and passed by Department of Agriculture. Sustainable Forestry Initiative: Certified fiber sourcing. www.sfiprogram.org. The Sustainable Forestry Initiative (SFI) program is committed to the sustainable management of North American forests. This container is made from renewable fiber sourced from responsibly managed forests. The SFI label applies to the package and not the contents within the package. This corrugated fibreboard has an edge crush test of not less than 32% international paper. Corrugated Recycles. Product of USA.