In this spin on a classic French Dip, chef Juan David Umaña utilizes lion’s mane mushrooms as a meaty substitute. As a chef focused on plant-based fare, mushrooms have played a pivotal role in his flavors and textures. Lion’s mane mushrooms serve as a perfect vessel for absorbing marinades and being exposed to high heat while maintaining their textual integrity. If you are unable to get a hold of lion’s mane, portobellos and shiitakes make a great substitution.