### Clue: Gent's head over heels with oil for Italian grub (7)
### Answer: RISOTTO 
 ### Explanation: Definition: Italian grub
 **Reversal of**(head over heels, in a down clue) SIR(a formal or polite term of address for a man, or, formerly, a gentleman of high social status) **plus **(with) OTTO(also called "attar", a perfume or essential oil obtained from flowers or petals).