Asparagus With Hazelnuts & Tarragon Vinaigrette

• 1/4 shallots (minced)
• 350 gr asparagus (fresh)
• 100 ml hazelnut oil
• 65 gr baby lettuces
• 45 ml tarragon wine vinegar (white)
• 36 gr hazelnuts
• 8 gr tarragon (dried)
• 5 ml dijon mustard