Intense pepper has a floral flavor that pairs well with beef. Add some coconut aminos for sweetness and umami along with some bell peppers and onion and you have a fragrant and delicious dish. I like to serve this with a side of lightly salted cucumbers for a quick and easy full meal.
Combine steak, baking soda, and pepper and toss to coat evenly. Let stand at room temperature for 15 minutes, or up to 2 days in the refrigerator.
Stir together the soy, sweetener, sake, and glucomann in a small bowl and set aside.
Heat a large pan over high heat. When hot, add 1 teaspoon avocado oil. When the oil is hot, add the onions and bell peppers and cook over medium-high heat, stirring occasionally until lightly charred and the onions and peppers are soft. Transfer to a serving bowl and set aside. Do not clean the pan.
Add the remaining 1 teaspoon of avocado oil. When hot, add half the beef. Cook over high heat, turning as needed to brown the meat. Repeat with remaining half of beef. Transfer to the serving dish with vegetables. Do not clean the pan. Add the garlic and cook until fragrant, about 1 minute. Add the reserved sauce ingredients and reduce to a thick sauce. Add back the meat and vegetables and remove from heat before drizzling with toasted sesame oil. Toss to coat and serve with a bit more fresh ground black pepper, if desired.