I remember buying my first vegan cookbook, in 2014 by Angela Liddon. I had been dabbling in vegan cooking for about a year before, but this was my first official cookbook (so much more have come since then). I recall flipping through the pages and feeling pretty comfortable with the DIY nut milk, homemade granola recipes, and green smoothies. Suddenly, I came across portobello mushrooms being used as meat substitutes in fajitas and burgers, which was a completely new concept to me at the time.