Preheat the oven, 200-225 degrees Celsius.
Grate the lemon.
Mix cream and crème fraîche. Add salt.
Add the basil. Then add the lemon peel and possibly some lemon juice as well, depending on how "lemony" you want it.
Place the salmon in an oven dish. Season with black pepper and salt. I saved some of the peel and sprinkled it on top of the salmon pieces.
Pour the sauce over the fillets.
After about 12 minutes the salmon is ready.
I added some fresh basil and black pepper. Lemon pepper also works very well with this dish. Serve with rice and perhaps sugar snaps?
..or with new potatoes and a salad.