It requires 1 foliage, 1 Meat (cannot be Monster Meat), and a vegetable (cannot be asparagus) with value of 1 or more. It takes 40 seconds to cook and 6 days to spoil.
When consumed, it restores 40 , 37.5 and 15 .
The Steamed Ham Sandwich is a reference to a scene from the Simpsons episode "22 Short Films about Springfield", where the character Principle Skinner buys hamburgers and calls them steamed hams. This idea is reinforced by the different quotes, which reproduce almost all the dialogue.