bedrock-samples/behavior_pack/trading/butcher_trades.json

{
  "tiers": [
    {
      "trades": [
        {
          "wants": [
            {
              "item": "minecraft:porkchop",
              "quantity": {
                "min": 14,
                "max": 18
              }
            }
          ],
          "gives": [
            {
              "item": "minecraft:emerald"
            }
          ]
        },
        {
          "wants": [
            {
              "item": "minecraft:chicken",
              "quantity": {
                "min": 14,
                "max": 18
              }
            }
          ],
          "gives": [
            {
              "item": "minecraft:emerald"
            }
          ]
        }
      ]
    },
    {
      "trades": [
        {
          "wants": [
            {
              "item": "minecraft:coal:0",
              "quantity": {
                "min": 16,
                "max": 24
              }
            }
          ],
          "gives": [
            {
              "item": "minecraft:emerald"
            }
          ]
        },
        {
          "wants": [
            {
              "item": "minecraft:emerald"
            }
          ],
          "gives": [
            {
              "item": "minecraft:cooked_porkchop",
              "quantity": {
                "min": 5,
                "max": 7
              }
            }
          ]
        },
        {
          "wants": [
            {
              "item": "minecraft:emerald"
            }
          ],
          "gives": [
            {
              "item": "minecraft:cooked_chicken",
              "quantity": {
                "min": 6,
                "max": 8
              }
            }
          ]
        }
      ]
    }
  ]
}