Make the vinaigrette by smashing the garlic and the basil leaves together with the mustard, salt, pepper and sugar as if making a pesto. When very well mashed, add the vinegar and blend well. Drizzle in the olive oil, blending to make a vinaigrette.
Slice strawberries and mix together with washed and dried grapes, and orange segments. Add 1/2 of the vinaigrette. Delicately stir the vinaigrette throughtout the fruits. In a separate bowl, place 1/4 of the vinaigrette with the arugula and toss gently to coat the lettuces. Place altogether on a platter with the fruits and serve with quiche. Great also in little fruit cups making it easy to get to the grapes.