Single-use food preparation container assemblies, systems and methods

A container including:

• a cup body having a rim and an inner circumferential surface;
• and
• a cup closure assembly configured for removable operative engagement with the cup body, the cup closure assembly including:
• an interior portion arranged to define a circumferential seal with said inner circumferential surface of said cup body and to define at least one central open portion;
• an outer portion arranged for at least partially removable engagement with said interior portion;
• and
• a rotary blade portion arranged for rotational sealing engagement with said central open portion of said interior portion,
• said interior portion including at least two mutually concentric downwardly-facing recesses, which are sealingly engaged by corresponding protrusions of said rotary blade portion.

A container including:

• a cup body having a rim and an inner circumferential surface;
• and
• a cup closure assembly configured for removable operative engagement with the cup body, the cup closure assembly including:
• an interior portion arranged to define a circumferential seal with said inner circumferential surface of said cup body and to define at least one central open portion;
• an outer portion arranged for at least partially removable engagement with said interior portion;
• and
• a rotary blade portion arranged for rotational sealing engagement with said central open portion of said interior portion,
• said rotary blade portion including a bottom-facing surface formed with first and second walls, which define dynamic sealing surfaces, each of said first and second walls defining a dynamic radially inwardly-facing circumferential sealing surface and a dynamic radially outwardly-facing circumferential sealing surface.