Wow--I'm having a flashback, LOL! My grandma made the same thing. She would fry the Spam, then fry the potatoes in the Spam grease. Nothing was wasted :)
She made her own biscuits too--rolled the dough and everything. On Spam days, she would make Spam biscuits--MAN! Those were good :)
Homemade Spam biscuits.....
I don't know if there is anything better in this world then a grandma's baking.