Quinoa with Celery and Mushrooms

I can just hear someone shouting “Oh, no, not quinoa again, ” but this is really good. I made it for friends who cannot eat onions or garlic. Looking around for a solution, I found that the freezer had two plastic containers of Boletus mushrooms that I had picked, cooked, and frozen in the summer. If—as is probable—fresh Boletus are not available, use another good mushroom. Even if you don’t forage as I do, you will find an expanding selection of flavorful mushrooms in shops—l