Do The Brew!

"You did the Brew - I respect that."
Do the brew! is a badge obtainable in the Haunted Mansion, you have to enter a secret room that has a calduron that when you touch, changes your had size and colour. This badge does not give out any skin.

How to get in the secret room
You first have to go around the mansion until you find a small staircase leading to an underground area, one of the walls there is traspassable and leads to "The witch room" touch the liquid in the cauldron to get the badge.