Bread-Bakers v104.n044.5

I had some bread at a restaurant in Skowhegan, Maine, that was delicious, 
it was light like Belgium waffles versus plain waffles, like angel food 
cake versus pound cake.  I called and talked to the baker, but he was not 
giving out any information AT ALL.

It was whole wheat, sliced very thick, about an inch.  What could make that 
airy, light texture?

Thank you all for you help....Helen