Customers might not know what they are actually buying, potentially affecting their purchasing choices and even their grilling experience.

Nearly half of all the lump charcoal we examined was oak or mesquite, which are both hardwoods that grow in North America, including in the U.S. and Mexico. READ MORE: Are seed oils toxic?

Nearly half of all the lump charcoal we examined was oak or mesquite, which are both hardwoods that grow in North America, including in the U.S. and Mexico.

Nearly half of all the lump charcoal we examined was oak or mesquite, which are both hardwoods that grow in North America, including in the U.S. and Mexico.