Marlborough wine industry expansion means more waste, but where does it go?

With more vines comes more waste, raising questions about what is being done with the thousands of tonnes of grape marc being produced every year in Marlborough. Grape marc, the skins and seeds left over after grapes are pressed for winemaking, has a variety of uses, including compost, nutraceutical products and stock feed. It typically makes up around a fifth of the overall harvest tonnage and with more vineyard hectares being planted, the pressure is on the industry to find ways to deal with its waste.