Green asparagus soup with fish roe<!-- -->

Ingredients

• 2 tbsp butter
• 10 oz / 300 g green asparagus
• 1 shallot
• 1 tablespoon oil
• 1 cup/ 2 dl (200 ml) heavy cream
• 2 1/4 cup / 5 dl (500 ml) water
• 1 vegetable stock cube
• 1 tbsp white wine vinegar
• 4.2 oz / 125 g baby spinach
• 1/2 teaspoon salt
• 1/2 teaspoon white pepper
• 3/4 cup 2 dl (200 ml) crème fraiche
• 3 oz/ 80 g fish roe
• 1/4 cup / 1/2 dl finely chopped red onion