Josie, I buy all of my hardwood at Home Depot or Lowes. I think many places that sell smokers would also sell hardwood. They sell chunks in bags and I'm certain that you should be able to find some. As Jim stated I usually use lump charcoal (not briquettes) because I feel that the lump charcoal burns hotter and then the addition of 4 or 5 chunks of hardwood will do the trick. It also depends on how many pies you want to cook, if you want to maintain the hot temperature for a long time add more hardwood.