fines and agreed to reduce acrylamide levels to be under 275 parts per billion. Many potato chip manufacturers attempt to remove burned and thus potentially acrylamide-rich chips before the packaging process. Large scanners are used to eliminate chips worst affected by heat. Regional varieties Similar foods Another food made from potatoes, notably the Pringles and Lay's Stax brands, is made by extruding or pressing a dough made from dehydrated potato flour into the desired shape before frying. This makes a product that is uniform in size and shape, which allows them to be stacked and packaged in rigid cardboard or plastic canisters. Pringles are officially branded as "potato crisps" in the US. Pringles may be termed "potato chips" in Britain, to distinguish them from traditional "crisps", but do not meet the definition or standard of identity for potato chips. Munchos, another brand that uses the term "potato crisps", has deep air pockets in its chips that give it a curved shape, though the chips themselves resemble regular bagged chips. An additional product similar to potato chips exists in the form of "potato sticks", also called "shoestring potatoes". These are made as extremely thin (2 to 3 mm) versions of the popular French fry but are fried in the manner of regular salted potato chips. A hickory-smoke-flavored version is popular in Canada, going by the vending machine name "Hickory Sticks". Potato sticks are typically packaged in rigid containers, although some manufacturers use flexible pouches, similar to potato chip bags. Potato sticks were originally packed in hermetically sealed steel cans. In the 1960s, manufacturers switched to the less expensive composite canister (similar to the Pringles container). Reckitt Benckiser was a market leader in this category under the Durkee Potato Stix and French's Potato Sticks names but exited the business in 2008. In 2014, French's reentered the market. A larger variant (about 1 cm thick) made with dehydrated potatoes is marketed as Andy Capp's Pub Fries, using the theme of a long-running British comic strip, which are baked and sold in a variety of flavors. Walkers make a similar product (using the Smiths brand) called "Chipsticks" which are sold in ready-salted and salt and vinegar flavors. Some companies have also marketed baked potato chips as an alternative with lower fat content. Additionally, some varieties of fat-free chips have been made using artificial, and indigestible, fat substitutes. These became well known in the media