A sterilized slush making assembly for shaving saline ice blocks is provided.The assembly is be autoclaved before use and includes a housing with an iceinput end and atumbler having raised edges that freely rotates therein and shaves the salineice block into aslush for target medical cooling. A safety mechanism prevents the tumbler fromrotatingwhen it is exposed through the ice input end to prevent harm to a user. Theassembly furtherincludes a guide plate placed inside the rotating tumbler to urge ice out ofthe housing. Amounting portion allows the assembly to be portable and mounted to a worksurface such as asurgical table. A hand wheel that can be turned manually allows for rotationof the tumblerwithout electrical power. Between uses, the assembly can be disassembled andautoclavedagain.