Steamed Fish And Spinach

• 1 clove garlic
• 1 green
• 210 gr pkg frzn fish fillets
• 60 gr onion (chopped)
• 60 ml dry wine (white)
• 38 gr pkg spinach (frozen chopped)
• 5 gr olive
• 1 gr tarragon (dried)
• 1 gr salt
• 1 gr pepper