Last year, I inoculated two oak trees with shitake mushroom spawn. For the longest time I thought I didn't do it correctly because the logs, after almost a year, had yet to bear any mushrooms.
That all changed last month when they started producing. We've stir-fried a couple of them and they were delicious.
Please don't consider the video "expert advice," as those were just my first logs. We bought our spawns from Maine. You can find additional advice here.