I made this the other night - very delicious. However, I found the glaze to be too bitter with the lemon extract. It was great in the batter, since it was baked and mellowed out, but I didn't like it in the glaze, so I made my own glaze, using lemon zest instead of the extract.
LEMON LOAF (Starbucks Copycat)
http://www.dashofbutter.com/2014/05/19/ ... emon-loaf/