Add olive oil and unsalted butter to a high-walled pan on medium heat
Dice onion and add it to the pan
Dice garlic and add it to the pan once the onion is translucent
Add can of tomatoes, stock, lemon juice and white wine to the pan and reduce the liquid by about a third.
Once reduced, add capers, olives and salmon.
Stir for about two minutes until the salmon is cooked.
Finish the sauce with heavy cream.
Serve over cooked rotini pasta and top with Parmesan.
Note – from a timing POV, I usually drop the dry pasta into boiling water right after adding the garlic to the pan.