Romaine lettuce leaves tend to be flatter than most lettuce leaves. They also often are wider and larger, so that if you want a large leaf for making a lettuce bed for presenting your jumbo shrimp or prawn wok recipes, romaine lettuce leaves are great. Add some green leaf lettuce leaves around the edges to give more body and some red leaf lettuce leaves to give a splash of color.
Romaine Lettuce head - full and un-wilted
More of the nutrients are in the leafy portion of the leaves, so try to pick your romaine lettuce with the riches green leaves and with green leaf edges far down the full leaf length. Don't buy the so called 'romaine hearts' which have all of the green romaine leaves stripped off.