Smithing
Smithing recipes allow you to create recipes in a smithing table. The BaseItem is the item that goes in the first slot with the Ingredient item being the item in the 2nd slot.
Configuration
TestRecipeTransform:
Id: NETHERITE_SWORD
Model: 5
Display: 'Emerald Sword'
Recipes:
UPGRADE:
Type: SMITHING
Template: EmeraldTemplate
BaseItem: diamond_sword
Ingredient: emerald