Spinach Salad In Fresh Orange Dressing With Pine Nuts

• 6 navel oranges
• 2 bunch
• 2 garlic (cloves)
• 1 pepper peel the oranges (freshly ground)
• 3/8 shallots (minced)
• 350 ml trimmed watercress
• 120 gr trimmed spinach
• 26 ml balsamic vinegar (white)
• 10 ml sherry vinegar
• 3 gr pine nuts