Saus Dill Krim dengan Salmon atau Trout

Bahan-bahan (4 porsi)

• 3/4 cup sour cream ((1))
• 2 tsp Dijon or hot English mustard ((2))
• 1/2 tsp garlic powder or 1 small garlic clove (, minced)
• 2 1/2 tbsp fresh dill (, finely chopped)
• 1 tsp lemon zest
• 1 - 2 tbsp lemon juice
• 2 tbsp milk ((or olive oil, for richness))
• 1/4 - 1/2 tsp salt
• 1/2 tsp white sugar
• 1/2 - 1 tbsp oil
• 4 salmon or trout fillets ((125g / 4oz each))
• Salt and pepper