3 Meanwhile, hear a frypan, add the oil to the pan and cook the seasoned sirloin for 3-5 minutes on each side (depending on the thickness). Let rest before slicing.
4 Simmer the edamame until tender then pod.
5 To make the dressing; whisk the ingredients together.
6 Arrange the tomatoes, beef and edamame on a plate with plenty of watercress, then dress.