Food package

Claim 1

IN A RECEPTACLE CONTAINING A PERISHABLE FOOD PRODUCT WITH WHICH THERE IS ASSOCIATED A MASS OF ADDITIVE HAVING A PROCLIVITY TO BECOME VITATED UNDER HEATING AND ADAPTED TO BE MIXED WITH THE PRODUCT AT THE TIME OF CONSUMPTION THEREOF WHICH COMPRISES A LATERAL WALL AND A BOTTOM WALL JOINED THERETO DEFINING A SPACE FOR RECEIVING THE PRODUCT AND A GENERALLY FLAT, TOP CLOSURE FOR SAID SPACE, THE CLOSURE AND LATERAL WALL BEING SEAMED AND JOINED FOR HERMETIC SEALING OF THE PRODUCT, THE IMPROVEMENT WHICH COMPRISES: MEANS INTEGRAL WITH SAID CLOSURE DEFINING A DEPRESSION THEREIN ACCESSIBLE OUTWARDLY OF SAID CLOSURE IN WHICH THE ADDITIVE IS RETAINED PENDING USE THEREOF, SAID DEPRESSION LYING BELOW THE GENERAL PLANE OF THE CLOSURE, A THIN, FLEXIBLE, TENACIOUS FILM CONSISTING A SEAL FOR SAID DEPRESSION, THE PORTION OF THE CLOSURE SURROUNDING THE DEPRESSION BEING AN ANNULAR, FLAT SURFACE TO PROVIDE A SEAT FOR APPLICABLE OF THE SEAL WHEREUPON THE SEAL ESTABLISHES HERMETIC SEALING OF THE ADDITIVE PENDING USE THEREOF, SAID CLOSURE HAVING AN OUTWARDLY PROTRUDING RIDGE INTERMEDIATE ITS PERIPHERY AND SAID ANNULAR SURFACE CIRCUMSCRIBING SAID ANNULAR SURFACE TO FORM A GUARD ABOUT SAID SEAL PROTECTING THE SAME AGAINST INADVERTENT TREATING AND DISLODGMENT PENDING USE OF THE ADDITIVE, SAID RIDGE BEING SPACED RADIALLY INWARDLY OF THE PERIPHERY OF THE CLOSURE TO DEFINE A SECOND ANNULAR AREA FOR PENETRATION BY A CONVENTIONAL CAN-OPENER.