Whittaker's trials compostable Peanut Slab wrapper in Wellington 1 Feb, 2021 12:00 AM 2 minutes to read Whittaker's is trialling a new compostable wrapper for its Peanut Slab. Photo / Supplied Wellington issues reporter, NZ Heraldgeorgina.campbell@nzme.co.nz New Zealand chocolate producer Whittaker's is trialling a compostable Peanut Slab wrapper for the Wellington region in a new partnership launched today. The chocolate will be in specially-marked, plant-based compostable packaging available at participating stores. Each store will have a unique For The Better Good collection box, which the wrappers can be returned to. Alternatively, the packaging can be disposed of in home compost bins.