Spam is NOT a "mystery meat." Spam is mostly Pork with Ham with just enough Salt, Water, Modified Potato Starch, Sugar, Sodium Nitrite to keep is good without refrigeration -- to make it edible for years ("best before" is over 2.5 years.)
Personally, I used Spam as:
Breakfast -- Fried sliced Spam, fried eggs, sourdough toast.
Lunch -- Sandwich, cold sliced Spam, bread, swiss cheese, lettuce, tomato, mustard.
Lunch -- Zatarain's® Red Beans and Rice with cubed Spam.
Dinner -- Skillet with onion, potato, bell peppers, Spam, pineapple, teriyaki.