> ## Content Index > Fetch the complete content index at: https://www.thecellarjournal.com/llms.txt > Use this file to discover other available public pages before exploring further. # Portugal Gives Used Cork a Second Life. Collection Is Still the Hard Part - URL: https://www.thecellarjournal.com/portugal-gives-used-cork-a-second-life-collection-is-still-the-hard-part/ - Published: 2026-09-03T14:18:25.000Z - Updated: 2026-09-03T14:18:25.000Z - Description: Portugal has built a second life for used cork. The harder task is collecting more than a fraction of the stoppers entering the market. - Author: Pedro Fadanelli - Tags: #en, Dispatches Green Cork has collected 117.6 million stoppers and linked recycling to the planting of 1.55 million native trees. Yet its own figures show that even Portugal's strongest collection year recovered less than 6% of the corks entering the domestic market **What happened** A new ScienceBlog article has drawn attention to Portugal's system for recovering used natural cork stoppers from supermarkets, restaurants, hotels, schools, wineries and other collection points. The stoppers are separated from ordinary waste, sent for processing and transformed into granules for new products. The system is real, but it is not a new initiative. Its main national programme, Green Cork, was created in 2008 by the environmental organisation Quercus in partnership with Corticeira Amorim and other participants. The relevant update is the scale now reported by the programme, not the launch of a new recycling route. Green Cork's current website displays 117,573,275 cork stoppers collected and 1,550,021 native trees planted. Those figures replace older totals cited in the ScienceBlog article and show how far the project has developed. They also reveal how much material still escapes collection. **What Green Cork actually is** Green Cork is a dedicated reverse-logistics network for natural cork stoppers. Consumers can return them through every Continente hypermarket and Continente Bom Dia store in Portugal, including the Azores and Madeira. The programme also works with schools, scouts, municipalities, waste-management systems, hospitality businesses, wineries and wine producers. That structure matters because a cork stopper is small, light and easily lost in a conventional waste stream. Green Cork does not depend on ordinary municipal sorting to identify it after disposal. It creates a separate route at places where stoppers are already concentrated or where people regularly return. The hospitality channel is particularly useful because volume can be collected before it is dispersed among households. A regional initiative operated with LIPOR reported 687 participating restaurants, hotels, cafes and bakeries across six municipalities in 2024\. Together they delivered 1,766.5 kilograms, or approximately 346,500 stoppers, during that year. **The current figures** Green Cork states that approximately 530 tonnes of used stoppers had been delivered for recycling by 2023\. The programme links the revenue generated by that material to Floresta Comum, which plants native Portuguese trees. Its current cumulative counter records slightly more than 117.5 million stoppers and 1.55 million trees. Corticeira Amorim operates a much wider international recycling network. Across programmes in Portugal, France, Italy, North America, Australia and other markets, the company says it collected and incorporated 123.8 million used stoppers into production in 2025, equal to 557 tonnes of recycled cork. The two totals should not be combined. One is the cumulative result of the Portuguese Green Cork programme, while the other covers Amorim's international network in a single year. The comparison does show that recycling volume increasingly depends on coordinated collection outside Portugal as well as inside it. **A second use, not another stopper** At Amorim Cork Composites in Mozelos, collected material is manually sorted to remove plastic closures, metal caps and other contamination. The natural cork is then ground. Material affected by colour, liquid or odour can require washing and disinfection before it returns to production as granulate. Recycled cork is not used to manufacture new wine stoppers. It moves into flooring, wall coverings, insulation, sports surfaces, transport components and design products. This is therefore not a closed bottle-to-bottle loop. It is a cascade in which a closure becomes a different material with a longer useful life. That distinction also matters for the cork-oak landscape. Recycling extends the life of cork already harvested, but it does not replace demand for new stopper-grade cork. The economic relationship between wine closures and the montado begins with fresh material; recycling adds another use and helps finance separate planting programmes. **The missing number is the collection rate** Cumulative totals sound large without a denominator. Green Cork estimates that approximately 320 million cork stoppers enter the Portuguese market each year. It also says that 2012 remains its strongest collection year and that even then the programme recovered less than 6% of the stoppers entering the market. In 2021, Quercus publicly discussed a goal of reaching a 50% recycling rate by 2025, equivalent at the time to approximately 600 tonnes a year. The current Green Cork pages do not publish a 2025 national collection rate or show that the target was reached. This is the central limit of the story. Portugal has created the infrastructure to demonstrate what can happen after a stopper is returned. Public reporting does not yet show that returning it has become normal behaviour at national scale. **What is confirmed** Green Cork has operated since 2008\. Its current website reports 117.6 million stoppers collected and 1.55 million native trees planted. The project accepts natural cork through a broad network that includes national supermarket coverage, hospitality businesses, schools, municipalities and wineries. Collected cork is sorted, cleaned when necessary and ground into granules. It is used for products other than new stoppers. Amorim reports that its international programmes processed 557 tonnes of recycled cork in 2025. **What remains unknown** Green Cork does not currently publish a complete annual series showing tonnes collected, the share of Portuguese stoppers recovered, contamination losses, transport distances, processing costs or the final allocation of recycled granules by product. The cumulative tree total is reported by the programme, but the public pages do not provide an independent audit linking each year's cork revenue to planting and long-term tree survival. Nor do they provide a current life-cycle assessment for the national collection network. A peer-reviewed study of end-of-life options for natural cork stoppers found that the preferred route can vary by environmental impact category. That is a reason to measure the whole system, including transport and processing, rather than assume that every collected stopper produces the same environmental result. **TCJ View** Portugal's achievement is not that cork can be recycled. The material has always made that technically possible. The achievement is the construction of a return route involving retailers, restaurants, schools, municipalities, the cork industry and a conservation organisation. Its limitation is equally instructive. Circularity begins only when the material comes back. A stopper may be renewable, biodegradable and useful in another product, but none of those qualities matters to a recycling plant if the stopper remains in mixed waste. The programme also clarifies two environmental arguments that are often merged. Choosing new natural cork can support the economic value of the montado. Recovering used cork extends the life of material already harvested and can finance native planting. They reinforce one another, but they are not the same intervention. The strongest figure is therefore not 117.6 million stoppers collected. It is the less comfortable figure beside it: under 6% in the programme's best year. That gap turns a celebratory story into a question for the wine trade. The industry already knows how to give a stopper a second life. The next test is whether it can make returning that stopper as ordinary as opening the bottle that carried it. **Sources** [Green Cork: Project, cumulative totals and collection-rate context](https://www.greencork.org/?ref=thecellarjournal.com)[ Green Cork: Results of the 2024-2025 collection campaign](https://www.greencork.org/campanha/resultados/?ref=thecellarjournal.com)[ Green Cork: Collection network and recycling process](https://www.greencork.org/participe/onde-entregar/?ref=thecellarjournal.com)[ Corticeira Amorim: Cork recycling results for 2025](https://www.amorimcork.com/en/sustainability/recycling/?ref=thecellarjournal.com)[ LIPOR: Cork by Cork 2024 results, March 26, 2025](https://www.lipor.pt/en/press-releases/cork-by-cork-we-keep-sowing-the-collection-2/?ref=thecellarjournal.com)[ Quercus: Green Cork collection targets and historical rates, March 4, 2021](https://quercus.pt/blog/2021/03/04/iniciativa-5-saidas-verdes-para-a-crise-floresta-mais-floresta-autoctone-menos-incendios-mais-reciclagem/?ref=thecellarjournal.com)[ Waste Management: End-of-life alternatives for natural cork stoppers](https://pubmed.ncbi.nlm.nih.gov/26427936/?ref=thecellarjournal.com)[ ScienceBlog: Portugal's cork collection and recycling system, September 3, 2026](https://scienceblog.com/m-portugal-collects-used-wine-corks-from-shops-restaurants-and-other-collection-points-and-sends-them-for-grinding-and-recycling-into-products-including-insulation-flooring-and-other/?ref=thecellarjournal.com)