Melt the butter in a frying pan, then add the sugar.
Cook the rhubarb quickly in the butter until it is just cooked.
Remove the rhubarb from the pan and leave to cool.
Deglaze the frying pan with port, let the sauce cool and use later as a dressing for the salad.
Mix the lemon juice, mustard and olive oil and season to taste. Use this to dress your leaves.
Make a loose ball of the leaves in the palm of your hand. Place it in the centre of your plate.
Make cross patterns around the leaves with your rhubarb batons, sprinkle the goats cheese, over and around the rhubarb, drizzle the port and butter mixture over the goats cheese and rhubarb.