How to get, grow and ride a Happy Ghast in Minecraft
Since 26.1, a Golden Dandelion (8 Gold Nuggets around a Dandelion) stops its growth.

The Gold Nugget is a ninth of a gold ingot. Nether gold ore drops a handful of them, smelting old golden tools and armor gives one back, and nine nuggets make an ingot again.
It is made with the Crafting Table from Gold Ingot (other recipes also exist).
Mining Nether Gold Ore in the Nether gives two to six nuggets per block, and Gilded Blackstone in bastions sometimes drops some. In a furnace, any golden tool, weapon or piece of armor melts down into a nugget, a way to recycle worn-out gear.
Nuggets are what you craft the golden foods and brewing ingredients with: eight around a carrot give a Golden Carrot, eight around a melon slice give a Glistering Melon Slice for healing potions, and eight around a dandelion give a Golden Dandelion.
A gold nugget with a sheet of paper makes a Name Tag, like any metal nugget. In a firework star, a nugget gives the explosion a star shape.
Gold Ingot → 9 × Gold Nugget
Any of: Golden Pickaxe, Golden Shovel, Golden Axe, Golden Hoe, Golden Sword, Golden Spear, Golden Helmet, Golden Chestplate, Golden Leggings, Golden Boots, Golden Horse Armor, Golden Nautilus Armor → Gold Nugget
Any of: Golden Pickaxe, Golden Shovel, Golden Axe, Golden Hoe, Golden Sword, Golden Spear, Golden Helmet, Golden Chestplate, Golden Leggings, Golden Boots, Golden Horse Armor, Golden Nautilus Armor → Gold Nugget
// Slots with several items cycle through every accepted option.
Since 26.1, a Golden Dandelion (8 Gold Nuggets around a Dandelion) stops its growth.
quartz ore drops Nether Quartz, nether gold ore drops 2–6 Gold Nuggets.
At the Crafting Table: 1 × Gold Ingot gives 9 × Gold Nugget. It can be found as loot in Ocean Ruins, Bastion Remnant, Igloo, Shipwreck and 3 more. It is dropped by Zombified Piglin.
It is crafted into golden carrots, glistering melon slices, golden dandelions and name tags, and nine make a gold ingot. It is an ingredient in 5 recipes, made at the Crafting Table; for example Golden Dandelion and Name Tag.
Gilded Blackstone (10%, with Fortune III 100%).