Chard-wrapped Salmon And Duxelles

• 4 swiss chard leaves stemmed
• 1 clove garlic (minced)
• 210 gr salmon fillets cross (cut)
• 65 gr brown veal
• 60 gr onion (finely diced)
• 55 gr mushrooms commercial
• 30 ml dry sherry
• 28 gr butter
• 28 ml dry wine (white)
• 1 gr salt