In a large saute pan, heat avocado oil over high heat. Once oil is hot, sear chuck roast 1.5 minutes each side. Place roast in slow cooker, add miso soup and cook 8-10 hours

After 8-10 hours, remove meat and place on cutting board. Heat a medium sauce pan over medium heat. Add juice from the slow cooker. In a separate small bowl, Mix 2 tsp tapioca starch and 2 tsp water. Once tapioca mixture is well combined, add into pan. Mix well and cook for 2-3 minutes

If not thick enough, repeat process. Once desired thickness is achieved, pour over meat, serve and enjoy!