How to force Cortana to use your default browser

One of the great horrors of Windows 10 is that Microsoft forces you to use Bing and Microsoft Edge with Cortana. When you search with Cortana, any web searches are automatically sent to Bing and displayed in the Edge browser, no matter what your default browser is. It wasn't always this way. Before April 2016 you could use any browser you wanted, although Cortana still insisted on Bing for search. But then Microsoft put a stop to browser choice, and Cortana-loving Edge haters have been recoiling...