I used about a 1/2 a 14 oz can of pineapple and 1/4 can of spam, I used the rest of those two ingredients and made my Luau Fried Rice
When I cook the spam, I do add some coarse salt so that the pieces have a nice contrast with the pineapple on the cupcake.
If you really like things salty sweet you can shake some coarse salt on top of the pineapple too.