Cos or Romaine (Romano) lettuce is long and almost oblong in shape. The leaves are thick and firm with a stiff central rib. The outer leaves are slightly bitter, but the ones in the centre are sweeter and more delicate.
Take no notice of that there picture. I thought they had sent cabbages by mistake. These babies are massive and so lush and healthy. Ordered one for my mum and she queried what it was (she orders cos every week from supermarket) The picture far from does them justice, a lettuce is a lettuce you say? Try one! It's a proper cabbage :)
Part of my regular weekly order the lettuce is always fresh.