Creamy five-minute herring with Västerbottensost®

Ingredients

• 80 g
• 1 egg
• 1-2 cups canola oil
• 1 tablespoon white wine vinegar
• 1 tbsp dijon mustard
• 2 dl crème fraiche
• 1 tsp lemon zest
• 2 packs of 5-minute herring of 420 g.
• Salt and black pepper