Find brown mushrooms naturally in dark areas like caves, swamps, and mushroom fields
Break brown mushrooms with any tool or by hand to collect them
Use a hoe on nylium in the Nether to help grow mushrooms nearby
Place a brown mushroom on podzol, mycelium, or nylium for easier spreading and growth
Bone meal a brown mushroom on the correct block to grow a huge mushroom
Trade with wandering traders for brown mushrooms
Harvest brown mushrooms from mushroom islands and mushroom-related structures in some worlds
Grow them in low-light areas so they can spread over time