Everyone Loves Quinoa Salad

They just don't know it yet.

Spanish olives, Manchego cheese, toasted almonds, and a smoky vinaigrette

FOR A LONG TIME, I JUST DID NOT get quinoa, the sensational seed (of an amaranth plant) that everyone treats like a grain. In the 90s, when I was covering restaurants in NYC, quinoa was announced by waiters with a regal tone, as if it were caviar rather than a dull pile of tiny pel…