[PROBLEMS] To provide a package for a lump of meat having voids within the inside thereof, which has an external form being substantially the same as that of a conventional package, is free from the deterioration in qualities such as appearance, color and smell, and can be stored for a long time. [MEANS FOR SOLVING PROBLEMS] A package produced by sealing a lump of meat having voids within the inside thereof with a mixed gas having a volume of 3 to 15 % relative to the lump and having a carbon dioxide content of 8 to 90 % and packaging. Lumps of meat having voids within the inside thereof include a fowl having been freed of the plumage and internal organs. A mixed gas having a carbon dioxide concentration of 8 to 90 % and an oxygen concentration of 0.05 to 70 % is preferably used as the previously-mentioned mixed gas. A packaging material having a shrinkage percentage of 15 % or more or exhibiting a permeation degree for an oxygen gas at 23°C and 80 % RH of 200 ml/m 2 datm or less can be suitably used for the package.
