Next is the perennial, burger-topping iceberg ... or Bibb lettuce. But unlike real butter, this is crammed with folate, iron, and potassium. No Caesar salad is complete without romaine lettuce.

Iceberg does have a role as a cut-and-come-again lettuce. No other salad ingredient keeps in such good condition for so long. In fact, I swear I have had one in fine nick in the salad crisper for ...

It adds color and crunch to the burger, but it also plays a much subtler yet no ... iceberg lettuce to prevent the absorption of juice while also giving the sandwich a nice crunch. Romaine and ...

But instead of iceberg, you're using romaine hearts; they typically come three to a package. Use the whole lettuce heart and quarter it lengthwise, so you get long, thin, elegant leaves on the plate.