The primary supplier of potatoes for McDonald's produces up to 2,400 tonnes daily, which are then transported to processing facilities to create McDonald's Fries.

Cargill has locations worldwide, ranging from Canada to India. They are the leading McDonald's oil blend supplier, producing approximately 1,770,750 metric tons of oils annually.

McDonald's does not disclose its preservatives and coloring sources, so the specific producers are unknown. What is known, though, is that McDonald's fries contain Dextrose, which is derived from corn. Given that Illinois is the #1 corn producer, it is quite likely that McDonald's sources its dextrose from processors in Illinois.

McDonald's does not disclose where it gets its preservatives and colorings from; therefore, the specific source of sodium acid pyrophosphate is unknown, except that it is made in the U.S.

Morton is one of the largest salt distributors in the U.S., producing 2.3 million tons of salt annually. It prioritizes quality by using only high-purity salt crystals, which makes it the gold standard for McDonald's fries.

Lamb Weston is McDonald's leading partner in terms of McDonald's most popular product: French fries. Lamb Weston is responsible for processing these fries using unprocessed materials. So they cut the fries, add all the chemicals and whatnot, and then fry them, which they then transport to retailers since Lamb Weston is both a manufacturer and distributor.

McDonald's has over 13.5 thousand restaurants in the U.S., making it the most popular and widespread franchise in the United States. They also have locations in other countries, but local resources are used, so this map is inaccurate for retail locations outside the U.S.