Minecraft wiki entry for Hunger_management, associated text: Advantages:
Can be a reliable food source if mushrooms and mycelium, podzol or nylium can be found.
The recipe can be made in the 2×2 crafting menu.
Restore 7.2 saturation.
If possible, pressing use on a mooshroom with a bowl will fill the bowl with stew.
Huge mushrooms can be grown with bone meal on any dirt variant in dark places with enough place, and can be easily taken down with an iron axe.