Heat oven to 180C/160C fan/gas 4.
Put the salmon in a large roasting tin,
leaving space between each fillet.
Wash and drain the broccoli and, while
still a little wet, arrange in the tray around
the fillets. Pour the lemon juice over
everything, then add the lemon quarters.
Top with half the spring onions, drizzle
with a little olive oil and put in the oven
for 14 mins. Remove from the oven,
sprinkle everything with the soy, then
return to the oven for 4 mins more until
the salmon is cooked through. Sprinkle
with the remaining spring onions just