Put an inch of water in a fry pan and bring to the boil
Put an inch of water plus ice into a shallow dish
Add enough asparagus to the boiling water so they lay flat. Allow asparagus to cook for 1 minute and then immediately plung the asparagus into the iced water to stop the cooking.
Repeat until all asparagus is cooked.
Place in a shallow dish in the fridge until needed
Mix together sauce, oil and water.Add dressing and sesame seeds before serving.