ServerEvents.recipes(event => {
    // obsidian -> crying obsidian
    event.recipes.create.haunting('minecraft:crying_obsidian', 'minecraft:obsidian');
    event.remove({output: Fluid.of('spelunkery:portal_fluid')});
    event.recipes.create.mixing(
        ['minecraft:obsidian',
            Fluid.of('spelunkery:portal_fluid', 144),
        ],
        [
            'minecraft:crying_obsidian',
            'minecraft:glowstone_dust'
        ]
    );
});