Mushrooms with coconut galangal sauce and pickled mango (v)

I had an exquisite vegan Filipino meal by Woldy Kusina at a pop-up at Home/Made Hudson a few weeks ago and I wanted to recreate it at home. Naturally, what I made differed in several ways, enough that I’m not sure it could properly be called “mushroom adobo” as his was. But it’s rich and savory and somehow reminds me a tiny bit of Thanksgiving gravy, ma…