onEvent('recipes', e => {
  e.custom({
    "type": "pneumaticcraft:fluid_mixer",
    "input1": {
      "type": "pneumaticcraft:fluid",
      "fluid": 'pneumaticcraft:plastic',
      "amount": 1000
    },
    "input2": {
      "type": "pneumaticcraft:fluid",
      "fluid": "minecraft:water",
      "amount": 1000
    },
    "item_output": {
      "item": 'pneumaticcraft:plastic'
    },
    "pressure": 0.5,
    "time": 20
  })
})