Would you eat this? Louisiana officials are warning the state’s cooks to be wary if they try to eat the invasive giant apple snails spreading in swamps. The snails are native to South America.

These buttery and garlicky Burgundy snails, or escargots de Bourgogne, are a classic French delicacy; yet they aren't French any more. Every snail prepared by the employees at Croque Bourgogne comes ...