In a small bowl, whisk together 1 tsp each of ginger paste, garlic paste, and smoked paprika. Add 1 tbsp of olive oil, 1 tbsp soy sauce, 2 tbsp sweet chilli sauce, and 1 tsp sriracha. Use a fork or whisk to mix until smooth and well combined. This spicy-sweet mix will be the star of the dish.
Place four fresh, skinless salmon fillets in a deep dish. Season them well with salt and pepper on both sides. Pour the sauce evenly over the fillets, ensuring they’re fully coated. Cover and refrigerate for at least 2 hours or overnight for best flavour. Let them sit at room temperature for 30 minutes before cooking.
Preheat your oven to 180–190°C (356–374°F). Transfer the salmon fillets onto a baking tray lined with parchment. Place a slice of lemon on each piece, then sprinkle with sesame seeds and a pinch of chilli flakes. Drizzle with a little oil and bake for 10–15 minutes until the salmon is fully cooked and flakes easily with a fork.
Once out of the oven, garnish each fillet with extra sesame seeds and a handful of fresh watercress. The fresh greens balance out the sweet and spicy glaze perfectly. Serve hot with steamed jasmine rice, stir-fried vegetables, or even a simple salad for a light, tasty meal.