minecraft-assets/data/minecraft/recipes/rabbit_stew_from_red_mushroom.json

{
  "type": "crafting_shapeless",
  "group": "rabbit_stew",
  "ingredients": [
    {
      "item": "minecraft:baked_potato"
    },
    {
      "item": "minecraft:cooked_rabbit"
    },
    {
      "item": "minecraft:bowl"
    },
    {
      "item": "minecraft:carrot"
    },
    {
      "item": "minecraft:red_mushroom"
    }
  ],
  "result": {
    "item": "minecraft:rabbit_stew"
  }
}