Magical Mango

Am happily exhausted today and thinking of that Seinfeld episode where Kramer buys all the fruit.  He peels a mango and offers some George who is suffering from, er... well let's just say he is suffering from one particular kind of exhaustion.  George takes a bite of mango and as the effects kick in he shouts "That's like a shot of B-12!" 

Have been asked to bring salad to a party on Saturday.  Any suggestions?