neuralgia/kubejs/data/minecraft/loot_tables/blocks/brown_mushroom_block.json

{
	"type": "minecraft:block",
	"pools": [
		{
			"name": "loot_pool",
			"rolls": 1,
			"entries": [
				{
					"type": "minecraft:item",
					"name": "minecraft:brown_mushroom"
				}
			],
			"conditions": [
				{
					"condition": "minecraft:survives_explosion"
				},
				{
					"condition": "minecraft:random_chance",
					"chance": 0.25
				}
			]
		}
	]
}