Begin by making the cure. Put all cure ingredients except the white wine and elderflower syrup into a food processor and blitz for 20 seconds to mix the ingredients and crack some of the spices.
Spread ½ this mixture in the bottom of a non reactive container that will snuggly hold the fish.
Place the fillets of salmon on top of this cure mix in one layer. Sprinkle over the remaining cure to completely cover the fish.
Pour over the wine mixed with the elderflower syrup, cover and refrigerate for 12 hours
After 12 hours turn the salmon and return to the fridge for a further 12 hours.
After curing, remove the salmon from the brine and gently wash under cold water, pat dry the fillets and place back into a clean container.
Serve by slicing thinly, drizzling with a little olive oil, a squeeze of lemon and sprinkling with the celery, chives and a few flakes of salt.