How do you get You Need a Mint in Minecraft?

Bring a stack of empty Glass Bottles to the End (craft from glass, or buy from cleric villagers).

What kind of advancement is You Need a Mint?

You Need a Mint is a The End tab advancement in Java Edition, of goal type.

You Need a Mint

Tab: The EndGoalDifficulty: Easy

Quick answer: Collect Dragon's Breath in a Glass Bottle

Tree path: The End › Free the End › You Need a Mint (advancements are independent: they can be completed in any order; the tree only guides progression)

Tree parent: Free the End

Advancements are exclusive to Java Edition. The Bedrock Edition equivalent is achievements, which have different objectives.

How to get You Need a Mint

Bring a stack of empty Glass Bottles to the End (craft from glass, or buy from cleric villagers).
During the dragon fight, watch for the Ender Dragon's breath attack: it leaves a purple lingering cloud on the ground. Its fireballs leave the same clouds on impact.
Right-click the purple cloud with an empty bottle to collect Dragon's Breath.

Tips

Dragon's Breath is the ingredient for Lingering Potions (brew it with a splash potion), which are required for tipped arrows. Collect at least a dozen while you are there: coming back later means respawning the dragon.

More guides from this tab (The End): The End Free the End The Next Generation Remote Getaway The End... Again...The City at the End of the Game