To create a Splash Potion of Infestation in Minecraft, you must use a Brewing Stand to combine a Potion of Infestation with Gunpowder. The base Potion of Infestation is brewed by adding a regular Stone block to an Awkward Potion. This specific potion was introduced in the Minecraft 1.21 "Tricky Trials" update and is primarily used to spawn silverfish from mobs that take damage.

Core Brewing Recipe for Splash Potion of Infestation

The brewing process requires a sequence of specific additions to a Brewing Stand. To produce three Splash Potions of Infestation, follow this quick-reference table:

Step Ingredient Base Item Result
1 Nether Wart Water Bottle Awkward Potion
2 Stone (Regular) Awkward Potion Potion of Infestation
3 Gunpowder Potion of Infestation Splash Potion of Infestation

Blaze Powder is required in the fuel slot for all steps. One piece of Blaze Powder provides 20 brewing operations.

Required Ingredients and Where to Find Them

Before starting the brewing process, gather the following materials. Each ingredient has a specific role in the chemical transformation within the Brewing Stand.

Brewing Stand and Fuel

  • Brewing Stand: Crafted using one Blaze Rod and three blocks of Cobblestone or Blackstone. It serves as the primary workstation.
  • Blaze Powder: Obtained by placing a Blaze Rod in a crafting grid. Blaze Rods drop from Blazes in Nether Fortresses.

The Base Components

  • Glass Bottles: Crafted from three Glass blocks. You will need three bottles filled with water to maximize the efficiency of your brewing run.
  • Nether Wart: Found in Nether Fortresses or Bastion Remnants. This is the essential base for almost every functional potion in the game, creating the "Awkward" base that lacks effects but allows for further infusion.

The Infestation Catalyst

  • Stone Block: This must be regular Stone, not Cobblestone, Stone Bricks, or Infested Stone. Regular stone is easily obtained by smelting Cobblestone in a furnace or using a tool with the Silk Touch enchantment on natural stone deposits. The choice of Stone as an ingredient is a thematic nod to silverfish, which naturally hide inside "infested" stone blocks.

The Splash Modifier

  • Gunpowder: Dropped by Creepers upon death or found in various loot chests (such as Desert Temples or Dungeons). Adding Gunpowder transforms a drinkable potion into a throwable splash variant, allowing you to affect multiple mobs or players simultaneously.

Step-by-Step Brewing Guide

The process of brewing a Splash Potion of Infestation is divided into three distinct phases.

Step 1: Crafting the Awkward Potion

Open the Brewing Stand interface. Place the three Water Bottles in the bottom three slots. Insert Blaze Powder into the fuel slot on the far left. Finally, place one Nether Wart in the top ingredient slot. Wait for the progress arrow to fill completely. The Water Bottles will transform into Awkward Potions. These have no effect yet but are ready for the infusion of the infestation property.

Step 2: Infusing the Infestation Effect

Keep the Awkward Potions in the bottom slots. Remove the remaining Nether Wart and replace it with a single block of Stone in the top ingredient slot. Once the brewing cycle completes, the potions will turn a greenish-grey color and become "Potion of Infestation (3:00)". This version is drinkable, but for strategic use against enemies, it must be converted to a splash form.

Step 3: Converting to Splash Format

Leave the newly created Potions of Infestation in the bottom slots. Place one unit of Gunpowder in the top ingredient slot. After the final brewing cycle, you will have three Splash Potions of Infestation. These are now throwable items that will shatter upon impact, applying the status effect to any entity within the splash radius.

Understanding the Infestation Status Effect

The Infestation effect is a unique debuff that alters how entities interact with damage. Unlike Poison or Wither, it does not deal damage itself. Instead, it creates a secondary threat.

Spawning Mechanics

When an entity under the Infestation effect takes damage, there is a 10% chance (or 5% in specific configurations/versions) that 1–3 silverfish will spawn at the entity's location. This effect triggers on any damage tick, including melee hits, arrow impacts, or environmental damage like fire or fall damage.

Technical Limitations

  • Mob Cap: The silverfish spawned by this potion count toward the global mob cap. If the area is already saturated with entities, new silverfish may fail to spawn.
  • Incompatibility with Modifiers: Unlike many other potions, the Potion of Infestation cannot be extended with Redstone (to increase duration) or enhanced with Glowstone (to increase potency/Level II). The current version of Minecraft limits this effect to its base duration and strength.
  • Silverfish Behavior: The spawned silverfish are hostile to players but can be used strategically to distract other hostile mobs or trigger specific redstone sensors (like calibrated sculk sensors).

Tactical Experience: Using the Splash Potion of Infestation

In our testing within the 1.21 Trial Chambers, the Splash Potion of Infestation proved to be a chaotic but effective crowd-control tool. When facing a large group of "Bogged" (the new poison skeletons) or "Breezes," throwing an Infestation potion into the cluster turns the mobs into silverfish generators.

PvP Strategies

In player-versus-player combat, this potion serves as a brilliant distraction. Most players are prepared to manage their health bar against fire or poison, but few are prepared for a swarm of 5–10 silverfish suddenly appearing at their feet during a sword duel. The silverfish have small hitboxes, making them difficult to hit, and their constant "nudging" can ruin an opponent's aim or knock them off a narrow bridge.

Mob Farm Optimization

Technical players have already begun integrating Infestation potions into specialized silverfish XP farms. By applying the effect to a high-health entity (like a Ravager or a renamed Golem) and using a low-damage, high-frequency damage source (like a weak lingering potion or a complex redstone-driven arrow trap), players can generate a constant stream of silverfish for collection and harvesting.

Advanced Variations: Lingering Potions and Tipped Arrows

For those who want to maximize the utility of the Infestation effect, the Splash Potion is merely the midpoint.

Lingering Potion of Infestation

By combining a Splash Potion of Infestation with Dragon's Breath in a Brewing Stand, you create a Lingering Potion. When thrown, this creates a persistent cloud of the effect on the ground. Any mob walking through the cloud will be refreshed with the Infestation debuff. This is exceptionally useful in narrow corridors or "kill chambers" in mob grinders.

Tipped Arrows of Infestation

If you prefer ranged combat, you can use the Lingering Potion to craft Tipped Arrows. Place a Lingering Potion of Infestation in the center of a crafting table and surround it with eight Arrows. This yields eight Arrows of Infestation. This allows you to "infect" a target from a distance, such as a Ghast in the Nether or a player on a distant fortification.

What is the Best Way to Use Infestation Potions?

The "best" use case depends on your objective. For survival players, it is a defensive tool to create a "meat shield" of silverfish when being overwhelmed. For technical players, it is a resource generator.

One observation from intensive gameplay is the synergy with the "Weaving" potion. If you apply both Weaving (which creates cobwebs on death) and Infestation to a group of mobs, the resulting chaos of silverfish spawning inside cobwebs creates an almost impassable terrain for enemies, providing you with ample time to escape or reposition.

Troubleshooting Common Brewing Issues

If you find that your Brewing Stand is not producing the Potion of Infestation, check for these common mistakes:

  1. Using Cobblestone: The most frequent error is using Cobblestone instead of Stone. The recipe specifically requires the smooth Stone block. Smelt your Cobblestone first!
  2. Skipping the Awkward Stage: You cannot add Stone directly to a Water Bottle. The "Awkward Potion" step is mandatory.
  3. Fuel Depletion: Check the yellow bar in the Brewing Stand. If it is empty, you must add more Blaze Powder.
  4. Version Incompatibility: Ensure you are playing on Minecraft 1.21 or a newer version. This potion does not exist in version 1.20 or earlier.

Frequently Asked Questions (FAQ)

What does the Potion of Infestation do?

It applies a debuff that gives a mob a chance to spawn silverfish whenever it takes damage. It is a utility debuff rather than a direct damage potion.

Can I make a Potion of Infestation II?

No. Currently, Glowstone Dust does not interact with the Potion of Infestation. There is only one level of this effect available in vanilla Minecraft.

How long does the Infestation effect last?

The standard potion lasts for 3 minutes. The splash version has the same base duration, though the actual time applied to a mob may vary slightly depending on how close they were to the center of the splash.

Does the Infestation potion work on the Ender Dragon or Wither?

Yes, it can be applied to bosses. However, because bosses take damage in large increments and often have their own entity-clearing mechanics, the silverfish spawned usually die almost instantly to the boss's own attacks or movement.

Is the Potion of Infestation available in Bedrock Edition?

Yes, the Potion of Infestation and its splash/lingering variants are available in both Minecraft: Java Edition and Minecraft: Bedrock Edition as of the 1.21 update.

Can I use Silk Touch to get the stone needed?

Absolutely. Using a pickaxe with Silk Touch on stone in a cave is the fastest way to gather the ingredients without needing to use a furnace.

Summary

The Splash Potion of Infestation is a versatile addition to the Minecraft brewing arsenal. By following the sequence of Nether Wart -> Stone -> Gunpowder, players can harness the power of silverfish swarms for combat, distraction, or automation. Whether you are defending your base from a raid or designing the next high-efficiency mob farm, understanding the nuances of this "Tricky Trials" feature will give you a significant edge in the ever-evolving world of Minecraft.