How To Make A Night Vision Potion

First add a standard wizard's measure of pure water to your cauldron.

The next ingredient you'll need is one carrot as carrots help you see in the dark.

Next you'll need a hedgehog's spike, these odd creature are nocturnal and have super night vision powers.

Then add half a litre of thelyphonida vinegar. This can be obtained from the rear end of a thelyphonida, a scorpion-like creature.

Finally add in some grey work milk, also known as gwilk.

Then give your mixture a good stir and then turn out the light. After a while your potion should start to glow brightly. Collect some of the mixture in a cup or glass then drink the potion and instantly your vision should shift allowing you to see in the dark.

I tested the potion using some special cards using a night vision camera. As it's pitch black normally I would't be able to see the cards, but after drinking the potion I could pick out specific cards on request in total darkness.