Brush a pan with 1 teaspoon of oil and heat it up. Fry the ham slices on each side until crispy. Remove and let it drip off on kitchen paper.
Wash the grapes, dab dry and cut in half. Coarsely chop the nuts. Clean and wash romaine lettuce, spin dry and cut into strips. Break the ham into bite-sized pieces.
For the vinaigrette, mix vinegar, mustard, salt, pepper and 1 pinch of sugar, fold in 5 tablespoons of oil.
For the layered salad, alternately layer romaine lettuce, cheese roses, grapes, nuts and ham on four plates or in small glass bowls. Drizzle some vinaigrette between each layer. Leave to soak in cold water for about 30 minutes.
Sort the sprouts, wash, drain and spread on the salad.