Provided are: a novel packaged drink which has a new mouthfeel that has never been attained before a process for manufacturing the same and a method for the quality check of a food, at least a part of which is in a gelatinized state. A packaged drink comprising a first part, at least the upper surface of which is in a gelatinized state, and a second part disposed on the first part, wherein when a prescribed mass (W1) of the first part is stirred, poured entirely on a mesh with 0.14-mm openings, and then allowed to stand for 30 seconds, the prescribed mass (W1) and the mass (W2) of the first part remaining on the mesh satisfy the relationship (1): 0.08×W1 &le W2 &le 0.4×W1
