French kids better start hoarding ketchup packets in their lockers, because America's favorite condiment is about to be rationed in schools in an effort to force them to start appreciating French ...

The rules leave young ketchup lovers here little choice. French schoolchildren are not allowed to bring home-prepared lunches to school and must either eat in the cafeteria or go home for lunch.

The "Frenchsicle," a unique offering from French's Ketchup, is available in select pop-up locations until Thursday, according to a news release from French's.

French's is celebrating the beginning of summer by selling ketchup-flavored popsicles — aka "Frenchsicles" — in pop-up shops in Canada.

By refrigerating some of its ketchup, the British grocer ASDA just wanted to "give everyone what they want." Instead, it stoked the flames of a long-simmering argument: where to keep the ketchup.

For tomatoes, the impact of ketchup has been similarly significant. The condiment, which the USDA refers to as catsup , accounts for roughly 15 percent of all tomato consumption in the United States.

Fridge or cupboard: Where do you keep your ketchup? Dr. Melvin N. Kramer, the president of a group that consults on food safety, joined NPR to bring science to this condiment conundrum.