A french fry gets soggy in 5 minutes. Lamb Weston wants to keep it crispy for 60. Its customers, like McDonald’s and Yum Brands, the owner of KFC, are increasingly teaming up with on-demand delivery services. But travel is brutal for French fries, especially when they’re squeezed next to a cold drink and a warm burger in a paper bag. The company’s basic French fries will stay crunchy for about five minutes. It has recently introduced a new variety with a special batter that can keep crispy for close to an hour — even after being microwaved at home. Lamb Weston believes the meal delivery trend in China will go global, and wants to be ready. Lamb Weston had already developed a French fry batter that could keep fries crispy for 12 minutes. So food scientists at the company’s laboratory in Richland began tinkering with the recipe to extend a fry’s life even longer. Read more