Turtle potion Cost 20,000 lollipops via Cauldron Buy from Effect Turns player into a Turtle and makes the player slower but more resistant. [Source]

The Turtle potion is an item that can be made in the Cauldron with 20,000 lollipops. The effect is to reduce your character's movement speed to 1/3 of normal^[1], but also reduce damage received in combat by 1/2^[2]. The damage reduction only applies to physical damage, not to spell damage (like from Ghosts cutting HP in half).

It is required to use one to beat the quest Developper's moat.

Making a Turtle potion

To make a Turtle potion, put 10,000 lollipops into the cauldron and click "boil". Once it says "Boiling... BOILING !", click "stop", then click "mix" and mix it for one second or more. After that, click "stop", then add another 10,000 lollipops, and boil it again until it says "Boiling... BOILING !". Click "stop", and then bottle it. (To make more turtle potions, put in multiples of 10,000 lollipops.)