Sandwich garniture

I think I'll serve some toast today
Oh no, there is no butter
Perhaps I'll find some jelly or jam
Amidst the cupboard's clutter
Sadly to say there is
no thing
To spread upon my bread
I'm forced to poke this knife
Into my hungry head
I bet inside there is mayonnaise
And something like smoked ham
My eyes can serve as olives
To garnish the sandwich I am