Consumers often have limited options for recycling the petroleum-based foam that cushions and insulates wine bottles during shipment, but a Napa Valley wine packaging company thinks it has found a way to make such recycling as easy as turning on a water spigot or stirring a compost pile.

Vinpak  recently said it inked an exclusive deal with a Michigan-based maker of a proprietary packing foam made totally from cornstarch that doesn’t come from genetically modified crops. Vinpack worked with KTM Industries to develop die-cut slabs of its Green Cell Foam to accommodate wine bottles as well as create corner pieces to protect decorative wooden boxes for bottled wine. Even the glue used in the shipper is made from cornstarch.