Gunpowder

Gunpowder is an item used for explosion-related recipes, and as an ingredient in potions to create splash potions.

In Bedrock Edition, wandering traders have a chance of 8.5% (increased by 1% per level of Looting) to drop 4 gunpowder when killed while showing the item as trade offer, if the player holds an emerald.

Creeper farms, ghast farms and witch farms are all efficient ways of obtaining gunpowder automatically or semi-automatically. However, in Bedrock Edition, creeper farms stop working after a few hours.