Was I dreaming?

I could have sworn there was a fake Frosty recipe on SE a week or so ago.

Simple, a quart of quality chocolate milk, a can of sweetened condensed milk; perhaps some salt and vanilla. Don't remember the procedure and that's the sticking point - I didn't print or save it at the time because I assumed I would be able to find it.

Nope.

A little help? I have the little man for the weekend and he's PO'd because I can't make that frosty!