Cork alternatives are materials used to replace traditional cork stoppers in wine bottles and other products. These alternatives aim to provide similar benefits, such as sealing and preserving the contents, while addressing issues like cork taint and sustainability. Common alternatives include synthetic corks, screw caps, and natural materials like agglomerated cork and plant-based polymers. The use of cork alternatives has grown due to environmental concerns and the need for consistency in wine preservation. Many winemakers are exploring these options to ensure quality and reduce reliance on cork oak trees, which are threatened by deforestation and climate change.