### Clue: This unusually fruitful giant outstanding at finding inspiration for starters (4-3)
### Answer: GOAT-FIG 
 ### Explanation: Definition: This unusually fruitful giant
 GOG(one of two giants who, according to tradition, are guardians of the City of London) **containing**(outstanding) [ AT + **1st letters respectively of** (for starters)" finding inspiration " ]. "giant" doing double duty?
Answer: A wild fig tree that's grows quite big.