How to Make Fermented Spider Eye in Minecraft: A Step-by-Step Guide


If you’re an avid Minecraft player, you’ll know that potion-making is an essential part of the game. And if you’ve been brewing potions for a while, you’ll likely have come across one of the most important and elusive ingredients: fermented spider eye. In this article, we’ll explore how to make fermented spider eye in Minecraft, the benefits of using it in potion-making, the science behind fermentation, and much more.

A Step-by-Step Guide to Making Fermented Spider Eye

Before we dive into the process of making fermented spider eye, let’s take a look at the ingredients that you’ll need:

  • Spider Eye
  • Brown Mushroom
  • Sugar

Now that you have all the necessary ingredients, you can start the fermentation process:

  1. Put the spider eye, brown mushroom, and sugar into your crafting table in any order. This will create the fermented spider eye.
  2. Alternatively, you can brew it in a brewing stand. Add a brown mushroom to an awkward potion (water bottle + Nether wart) to create a potion of weakness, and then add the spider eye to the potion of weakness to create the fermented spider eye.
  3. Once you have the fermented spider eye, you’re ready to use it in potion-making.

It’s important to note that brewing stands require Blaze Powder as fuel, and can only be used once you’ve found Nether Fortresses and collected Blaze Rods. If you don’t have access to brewing stands yet, the crafting table method is a great way to get started.

A few tips to ensure success when making fermented spider eye:

  • Make sure you have all the ingredients in your inventory before starting.
  • Double-check the recipe to make sure you have the right quantities and ingredients.
  • Choose a safe, indoor location for brewing potions to avoid any unwanted visitors during the process.

The Benefits of Fermented Spider Eye in Potion-Making

Now that you know how to make fermented spider eye, let’s explore its benefits when it comes to potion-making:

Interacting with other potion ingredients: Fermented spider eye is a key ingredient in many potion recipes because of how it interacts with other ingredients. When added to certain potions, it can invert the effects, turning positive effects into negative and vice versa. When added to certain potions, it can also weaken the effect of the potion.

Changing a potion’s potency: In addition to changing a potion’s effect, adding fermented spider eye can also change its potency. For example, when added to a potion of healing, it becomes a potion of harming, which can be used offensively against enemies.

Examples of potions that use fermented spider eye: Fermented spider eye is used in many important potions in Minecraft, including:

  • Potion of Weakness
  • Potion of Harming
  • Potion of Slowness

Using fermented spider eye wisely can help you achieve the desired effect for your potion.

The Science Behind Fermentation

You may be wondering what exactly fermentation is and why it’s important in potion-making. Fermentation is the process by which microorganisms, such as yeast or bacteria, convert sugars into alcohol or acid. In Minecraft, fermentation is necessary to create certain potions and food items, including fermented spider eye and bread.

When crafting fermented spider eye, the sugar is consumed by the mushroom which then releases spores, which are used to create the potion. Essentially, the fermentation process breaks down the sugar and other ingredients to create a powerful potion.

Understanding the science behind fermentation can help you grasp the concept of potion-making and offer you better insight into how different ingredients interact with each other.

A History of Fermented Spider Eye

Minecraft players may be curious about the origins of this peculiar potion ingredient. In the earlier versions of Minecraft, fermented spider eye was not even an item, and players had to create potions using alternative ingredients. In later updates, the potion ingredient was introduced, and now it has become a key component of many different types of Minecraft potions.

Interestingly, fermented spider eye can also be used in Alchemy in real life, although spider eyes are not among the usual ingredients! The practice of using fungi in potions and medicines dates back millennia, and many ancient civilizations had their own unique blends.

But today, we use brewing stands and crafting tables to make our potions!

Common Mistakes to Avoid When Making Fermented Spider Eye

So you know how to make fermented spider eye, what it’s used for, and how it interacts with other ingredients. But what are some common mistakes to avoid when brewing?

Adding ingredients in the wrong order: As with many things in Minecraft, the order that you add ingredients is critical. You won’t get the desired result if you add the ingredients in the wrong order, or if you use the wrong recipe altogether. Make sure you double-check your recipe before starting.

Not having all the ingredients: Another common mistake is to start brewing without all the necessary ingredients in your inventory. This can be frustrating and waste valuable resources. Make sure you have everything you need before starting the process.

Leaving the potion unattended: It can be tempting to go off and do something else while you’re waiting for the potion to brew, but this can result in an unwanted visitor or even the loss of your potion. Always keep an eye on your potion to avoid any unpleasant surprises.

By avoiding these common mistakes, you can increase the chances of success when brewing fermented spider eye.

Creative Uses for Fermented Spider Eye

While fermented spider eye is primarily used in potion-making, there are other creative uses for this useful ingredient:

  • As a decoration: You can use fermented spider eyes as part of a spooky decoration for Halloween-themed builds or haunted houses. It will certainly give your creation a creepy touch!
  • As a brewing ingredient in adventure maps: If you’re creating an adventure map, you can add fermented spider eye as an ingredient in a quest for players to brew potions and progress in the game.
  • As a prank: If you’re playing with friends, you can swap a few potion ingredients (including the fermented spider eye) to create an unexpected effect and surprise them!

These are just a few fun and creative ways to use fermented spider eye outside of potion-making.


In conclusion, making fermented spider eye is an important aspect of potion-making in Minecraft. By following the steps outlined in this article, you can successfully create your own potion of weakness, harming or slowness. It’s a versatile ingredient that can interact with other potion ingredients, alter a potion’s potency and effects. This article has also explored the science behind fermentation, the history of the ingredient and some common mistakes to avoid. And finally, we’ve looked at some creative uses beyond potion-making.

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