The Potion of Slow Falling does exactly as you’d expect. When the effect is active, you’ll fall slowly from the air, in a gliding-like motion. As long as Slow Falling is active, then you can even fall from the max world height without taking any damage.
There are countless situations where the Potion of Slow Falling comes in use. However it’s always recommended to take one into the End Dimension if possible. When hit by the Ender Dragon, it will often knock you up into the air, causing you to potentially fall into the Void, whereas this Potion can definitely help with that.
How to Make a Potion of Slow Falling
Follow the steps below to craft a Potion of Slow Falling. If you already have Awkward Potions, then you can skip ahead to Step 3.
Step 1: Craft a Brewing Stand
If you don’t already have one, you’ll need to craft a Brewing Stand. These are easily craftable, requiring 3 Cobblestone and 1 Blaze Rod.

The image above shows the recipe. You’ll need to place 3 Cobblestone alongside eachother, with a Blaze Rod in the upper middle slot. Once crafted, place the Brewing Stand down in your world.
Step 2: Craft Awkward Potions
Inside of the Brewing Stand, place 3 Bottles of Water into the bottom slots. In the top left slot, you should place your Blaze Powder, which will fuel the stand. In the top slot of the Brewing Stand, place some Nether Wart.

After a short amount of time, the Nether Warts will be infused with the Bottles of Water, giving you 3 Awkward Potions in return. Make sure to leave them in there.
Step 3: Craft the Potions of Slow Falling
Now you should have the top slot of the Brewing Stand empty, with the 3 Awkward Potions in the bottom slot. Make sure the Brewing Stand still has fuel, and in the top slot, place a Pufferfish.

You can obtain Pufferfish through Fishing, and the chances of obtaining them can be increased with the Lure Enchantment on your Fishing Rod. If you’re playing on Minecraft Bedrock Edition, you can’t catch them inside of Jungle Biomes.
Extending the Potion Duration
You can extend the duration of your potion easily. Leave or place them into the bottom 3 slots of the Brewing Stand. Add Redstone Dust to the top, and the duration the potion lasts will be extended from 1:30 minutes to 4:00 minutes instead.
Turning it into a Splash Potion
If you want to turn it into a Splash Potion, it’s simple to do. With your completed Potions inside of a Brewing Stand, simply add Gunpowder into the top slot. Once the Brewing process has completed, you’ll have Splash Potions instead.