Kohlrabi salad with crème fraîche dressing and croutons

Ingredients

• 2 kohlrabi
• 1/4 cup crème fraîche
• 1/3 oz parsley
• 1/4 oz chervil
• 1/4 oz chives
• 1 clove garlic
• 1 tbsp caper
• 2 hard boiled eggs
• 1/2 baguette
• 1 oz hazelnuts
• 2 tbsp olive oil
• 1 tsp sugar
• 1 tsp Worcestershire sauce
• 1 tbsp white wine vinegar
• 1 lemon
• 1 1/2 oz Parmesan cheese
• chives (for serving)
• salt
• pepper