Prosciutto may be substituted for lonza slices. Trim the ends of the arugola, discard any damaged leaves. rinse, dry well and place in a large bowl. Dry clean the mushrooms with a paper towel and slice very thinly. Toss immediately with some of the lemon juice and add to the bowl. Cut the lonza into strips and add to the bowl with the pine nuts. Prepare the dressing with the reamining lemon juice, olive oil, parsley, pureed garlic, pepper and a little salt. Pour the dressing over the salad, tossing lightly and top with the parmigiano shavings. Serve immediately. Prep time= 20 mins.