Possible Clues:

• Island in the Atlantic Ocean
• Fortified white wine from island off NW Africa
• Varied a menu, serving up cake
• Is that the place that created militant republicanism?
• Forced artist to eat one cake
• Wine caused Gershwin to ...
• Wine produced by Irish American
• Created one recipe, getting a type of cake
• Island produced a change of air
• Admire a freshly baked cake