ServerEvents.recipes(event => {
    event.custom({
      "type": "minecraft:crafting_shapeless",
      "ingredients": [
        {
          "item": "minecraft:dirt"
        },
        {
          "item": "minecraft:dirt"
        },
        {
          "type": "forge:nbt",
          "item": "minecraft:potion",
          "nbt": "{Potion:'minecraft:water'}"
        }
      ],
      "result": {
        "item": "minecraft:clay_ball"
      }
    })
})