Salmon and asparagus with summer salsa

1) Remove the salmon fillets from the fridge and bring to room temperature 10 minutes before cooking.
2) Melt the butter with the oil in a pan over a medium high heat.
3) Season the salmon fillets and add to the pan skin down, cook for 4 minutes.
4) Turn the salmon over and cook until it feels firm to the touch, about 3 minutes more.
5) Meanwhile steam the asparagus until just tender and drain.
6) Mix the remaining ingredients together to make a fresh summer salsa.
7) To serve arrange the asparagus on a plate, top with the salsa and the cooked salmon.
8) Pour over any butter remaining in the pan and enjoy.