In a large skillet, heat oil over medium heat. Add garlic or ginger (if using) and stir until fragrant
Add mushrooms and cook for 3–4 minutes until soft and slightly browned
Add ground bison and sea salt, cooking until browned and cooked through, breaking up meat as it cooks
Turn off heat, stir in lemon juice and fresh herbs
Spoon mixture into lettuce leaves and serve immediately. Optional: top with avocado slices or a dollop of coconut yogurt