Preparation Heat 5 Tbsp. oil in a large nonstick skillet over medium-high until shimmering. Add mushrooms and cook, tossing often and reducing heat as needed to avoid scorching, until golden brown all over, about 15 minutes. Add scallions, garlic, and ginger to skillet, followed by remaining 1 Tbsp. oil. Cook, stirring often, until aromatics are softened and fragrant, about 4 minutes. Remove skillet from heat; season mushroom mixture lightly with salt. Mix in shallots, chiles, mint, fish sauce, and half of peanuts. Taste and season larb with more salt if needed. Transfer larb to a platter or large bowl. Serve with cabbage and remaining peanuts alongside.
Preparation Heat 5 Tbsp. oil in a large nonstick skillet over medium-high until shimmering. Add mushrooms and cook, tossing often and reducing heat as needed to avoid scorching, until golden brown all over, about 15 minutes. Add scallions, garlic, and ginger to skillet, followed by remaining 1 Tbsp. oil. Cook, stirring often, until aromatics are softened and fragrant, about 4 minutes. Remove skillet from heat; season mushroom mixture lightly with salt. Mix in shallots, chiles, mint, fish sauce, and half of peanuts. Taste and season larb with more salt if needed. Transfer larb to a platter or large bowl. Serve with cabbage and remaining peanuts alongside.