District Doughnut, which made its name on sophisticated flavors like brown butter and dulce de leche, has weathered a number of food price hikes in recent years as flour, sugar and eggs all got more ...

The price of vegetable oil has spiked, creating headaches for restaurants who rely on it for frying. The used oil is also valuable, and thieves have been stealing it from restaurant dumpsters.

ISTANBUL — For months, Istanbul restaurant Tarihi Balikca tried to absorb the surging cost of the sunflower oil its cooks use to fry fish, squid and mussels. But in early April, with oil prices nearly ...