Pre - Heat the oven to 180 °C. Keep the butter out so that it is not straight from the fridge
Wash the herring fish under running tap water. I asked the fishmonger to slit it through the middle and clean it from the inside for me after removing the head and the tail
Place the fish on baking parchment in a baking tray and sprinkle liberally with Maldon smoked sea salt
Wrap the parchment to make a neat parcel
Bake the fish in the oven for 20 minutes at 180 °C
Meanwhile, heat a heavy-bottom pan on medium heat
When the pan is at add 2 heaped tbsp of butter
Add in the bay leaf and then finely chopped onion and finely chopped garlic with skins
Then add in the Knorr three peppercorn flavour pots and cook until the onion has gone soft
Once the fish has been baked, remove from the oven and allow for the steam to escape
When you can hold the fish in your hand without scalding remove the skin which should come of pretty easily and remove the bone, it comes straight off which is great, one clean sweep. Don’t worry if the fish falls apart, it will still taste amazing!
Plate each fish onto 2 plates
Place the onion onto the fish and serve with baby kale and chopped cherry tomatoes. If you wish to sprinkle some sea salt on the salad leaves