Rising fast-food prices over the past year have prompted consumers to cook cheaper meals at home and avoid eating out, hurting the industry.

With onions from one supplier implicated as the source of E. coli illness linked to McDonald's Quarter Pounders, other fast food chains are

Burger King parent Restaurant Brands and KFC owner Yum Brands missed market estimates for quarterly results on Tuesday, hit by weak demand in the United States and abroad from budget-stretched customers.