Spring Greens with Pecorino Romano and Toasted Walnuts

For the dressing:  Combine 1½ TBS sherry or tarragon vinegar, 1 garlic scape or clove of garlic finely chopped and ¼ tsp. salt.
-Whisk together and let stand for 15 minutes.
-Stir in 1 tsp Dijon mustard and 6 TBS of walnut/and or extra-virgin olive oil. 
For the greens:  Without undoing the rubber band, gently swish 1 bunch of arugula in some cold water, and then shake dry.  
-Beginning from the top of the bunch of arugula, cut ½ inch strips off until you reach the bottom 2 inches and then discard the stems.  
-Wash a head of butter lettuce and then spin the lettuce and the arugula dry in a salad spinner.  
-Chop a third of abunch of chives into thin slivers.  
-Put a tsp of butter in a small skillet over low heat.  
-Add ½ cup walnut halves and toast until golden brown, 2-4 minutes.  
-Coarsely grate ½ cup Pecorino Romano.
To assemble salad:  Toss the greens with the chopped chives, enough dressing to coat. 
-Heap the greens on individual serving plates and top with a generous sprinkle of cheese and some walnuts.