The invention shows a food casing comprising a hose casing and cover platesterminallyattached thereto in a liquid tight manner, which cover plates cover theterminal cross-sectionalopenings of the hose casing. At least one of the cover plates has a fillingopening comprising a check valve, which is passable for food mass filled inthe hosecasing and blocks against the leakage of food mass out of the hose casing.