Does anyone have 'recipes' for fake cum, spit and piss by any chance?

Im going to be having some content shot in the next few weeks but one of the producers im talking to tells me that there is no way that he'll be able to get the models to produce enough cum, piss and spit on their own for what these shoots entail.

Anyone happen to have any realistic looking recipes to make 'fake' bodily fluids? Specifically the cum and spit aspect.

Regards,

Lee