In a sauté pan when hot, add olive oil and butter when light golden brown, add the shallots and cook until light golden brown. Add the wine, salt and pepper and let reduce until about half is left, then add the lemon juice & zest. Add the chicken stock, cornstarch (if necessary), capers, parsley and cream. Bring to a boil and set aside. Off the heat, add the butter. Adjust with salt and pepper.