Such a wee snippit, but I fulfilled my goal. I made sammiches by mapping over an array of meats and adding concatenating little bun strings. I think in this case, the proper term is mayonnaising. 

var meats = [‘hamburger’, ‘roast beef’, ‘pulled pork’];

function makeSammich(){
 return meats.map(function(val, i){
   console.log(“bun ”+val+“ bun”);
 })
 return
}                  
makeSammich();