Factory Operations


Stahmann Webster’s Leeton facility is by far the largest and most advanced walnut processing plant in Australia. Built in 2014, the operation covers more than 7,000m2 of production and storage area and comfortably processes more than 12,000 tonnes of walnuts each year for nut-in-shell and kernel customers. The operation is Global GAP and BRC accredited as required by the world’s leading manufacturers and retailers.


Stahmann Webster’s Toowoomba factory handles both pecans and macadamias on allergen-separated processing lines. More than 80% of the Australian pecan crop is processed here, under the highest Global SQF food safety standards, with products distributed through all major domestic manufacturing and retail channels.

Value-adding is a core activity at the Toowoomba plant, including roasting and salting of macadamias for both wholesale and retail clients in Australia and internationally.

Food Safety and Quality Management

Across all sites, Stahmann Webster is dedicated to the application of a modern, high standard quality management system following all relevant legislation, industry standards and customer requirements. We are fully committed to the efficient production of safe, legal and quality products that are fit for purpose in the modern manufacturing and consumer environment.

Our accreditations include GMP, HACCP, HALAL, Kosher, GLOBALGAP, SQF Manufacturing, SQF Quality, AQIS as well as national licences for import and export.

Both the Leeton and Toowoomba facilities of Stahmann Webster are peanut-free.


Leeton Factory, 148 Colinroobie Road

Toowoomba Factory,  193 McDougall Street

  • SQF Manufacturing (PDF)
  • SQF Quality (PDF)
  • HACCP Certificate
  • HALAL Certificate
  • Kosher Certificate
  • Woolworths Certificate
  • Department of Agriculture – Export Licence
  • Department of Agriculture – Import Licence
  • Toowoomba Regional Council – Food Business Licence

Walnut and Almond Orchards in NSW and Tasmania

  • Global G.A.P. Certificate