While examining the .afpub file posted by MxHeppa here I noticed that if I double-click on a line in the recipe text frame, and then compare the Context Toolbar and the Character panel:
In Publisher 1.7.3.481, both locations agree that the font is Georgia.
In Publisher beta 1.8.0.518, the Context Toolbar says the font is Georgia, and the Character panel says the font is Arial.
From the beta: