Make bacon less salty I just finished a burger that I got at a local butcher/deli.  The burger was half ground chuck and half apple wood smoked bacon.  It was delicious.  The only problem I have with it is that it was very salty.  I do not know if the butcher added any additional salt, but assuming he did not, how would go about making my own version of a half ground chuck/half ground bacon burger less salty?  This is assuming all of the salt is coming from the bacon.

There was also a slice of American cheese, lettuce, tomato and mayo on it.
Not all bacon is equally salty. Look at nutrition labels on the bacon when you go shopping, find the least salty bacon you can, and try that. You'll be best off if you cook a small amount of your meat mixture to taste, so that if you manage to end up with too little salt, you can add some back in. If it's still too salty, then all you can really do is add other, less salty meat. I imagine a burger made from 1/4 bacon would still have tons of bacon flavor.