The speculation downstairs is misleading. When it comes to erect lettuce, it depends on the score. As for rhubarb, forget it.
This is lettuce. Underage lettuce, to be exact.
Lettuce; lettuce
We usually eat lettuce with many stems, but in fact the leaves of lettuce are quite delicious.
Lettuce leaves are very similar to oil wheat vegetables, and their taste and taste are also very similar, because they are close relatives and belong to the genus Lettuce. Including the above saying that "it is more reliable to say that it is upright lettuce" because they are closer. Lettuce is divided into leaf lettuce and stem lettuce, and leaf lettuce is lettuce.
But your picture is not lettuce, which means it is not leaf lettuce, but normal stem lettuce, which is only a secondary state.
Come on, let's take a real shot.
Lettuce leaf
Lettuce leaves can also be eaten raw, cold, fried or boiled. But this thing has shrunk so much that it will disappear after being fried in a large pot, let alone cooked. So the best way to eat it is cold salad or fried until cooked.