Just buy a can a SPAM, open it and put it on a small plate. Then slice a piece and add it to some bread, add mayo or whatever you want. Some people like to fry it first, some like to microwave it, then make a Sandwich with it. I just open the can and slice a piece off then put plastic wrap over the plate to save the rest for later. I have microwaved the SPAM slice also before on a separate plate and then added it to my bread for a Sandwich.
Check it out. Enjoy. :)