PokeyJack, re: lactose intolerance and butter -- You might try clarified butter ("ghee"). The milk solid are removed. It can be expensive to buy at health food stores, but you can also clarify your own butter.
For demonstration/directions:
https://www.google.com/search?q=how+to+make+ghee+from+butter&oq=how+to+make+ghee&aqs=chrome.1.69i57j0l15.8353j0j4&sourceid=silk&ie=UTF-8