150ml extra virgin olive oil or a mixture of olive and other oils. e.g sunflower
1 level teaspoon mustard (Dijon or English)
1 large clove of garlic, crushed
1 scallion or small spring onion
sprig of parsley
sprig of watercress
1 level teaspoon salt
few grinds of pepper
pinch of sugar
Method
Put all the ingredients into a blender and run at medium speed for 1 minute approx. or mix oil and vinegar in a bowl, add mustard, salt, freshly ground pepper and mashed garlic.
Chop the parsley, spring onion and watercress finely and add in. Whisk before serving.