Use a fork to scrape firmly down the length of the stems so they shred into strands. Tear the caps into thin strips.
In a bowl, mix together the ground cumin, ground coriander, garlic, ginger, sriracha, vegetable oil, sea salt and cracked black pepper.
Place a dry pan over medium-high heat with no oil. Add the shredded mushrooms and a pinch of salt. Fry for 5–7 minutes until they release their water and turn golden. Remove from the pan.
Heat the 2 tablespoons of vegetable oil in a pan over medium heat. Add the sliced red onion, crushed garlic, red pepper, and red chilli. Cook for 3–4 minutes until they begin to soften.
Stir the dry-fried mushrooms and the marinade in the pan with the vegetables. Toss thoroughly for 2 minutes until fully coated and fragrant.