### Clue: Prawn cocktail? Comparatively sharp within two seconds (8)
### Answer: STARTERS 
 ### Explanation: Definition: Prawn cocktail?
  TARTER(whimsical comparative,*comparatively* of "tart",*sharp* in taste,acidic) in(*within*) SS(s = one $$s$$econd, ss = *two seconds*)
Defn:  An example,*?* of starters, the first course of the meal.