The two beef patties for the Big Mac® are 100% British and Irish beef, supplied by our beef patty supplier in Scunthorpe. The Bun used for the Big Mac® is baked by one of our bakery product suppliers in Heywood near Manchester or Banbury, Oxfordshire. Our Big Mac® sauce is made by one of our sauce suppliers in Lancashire, and the cheese slice is made by a supplier in Coleraine, Northern Ireland. The dill pickles are sourced from Turkey and the onions are from the United States. Finally, the shredded iceberg lettuce is predominantly sourced from the UK in the spring and summer months, and Spain in the autumn and winter months. However, there is also a small percentage that comes from Holland, Morocco and France.