McCain Foods are the largest manufacturer of frozen potato products. Combining their knowledge of farming with new frozen food technology, the McCain brothers started producing frozen French fries in 1957. Nowadays, their french fries, chunky chips and other potato products are used in foodservice establishments around the world. 1 in 4 frozen potato products are made by McCains. Choose from wholesale packs of their roast potatoes, potato wedges, thick cut chips, smiley faces and much more.