Wizardry/src/main/resources/assets/ebwizardry/recipes/firebomb.json

{
    "type": "minecraft:crafting_shapeless",
    "ingredients": [
        {
            "item": "minecraft:blaze_powder"
        },
        {
            "item": "minecraft:blaze_powder"
        },
        {
            "item": "minecraft:glass_bottle"
        },
        {
            "item": "minecraft:gunpowder"
        }
    ],
    "result": {
        "item": "ebwizardry:firebomb",
		"count": 3
    }
}