Potion brewing in YapYap becomes essential once monster encounters intensify. The difference between a successful escape and a failed run often comes down to having the right potion ready. Understanding which ingredients combine into which effects, and how to obtain them, is critical for survival.
Quick answer: The five potions are Vitality (Carrot + Five-leaf Clover + Feather), Strength (Normal Mushroom), Invisibility (Susroom), Flight (Phoenix Feather), and Nasty (Small Bat + Bottle + Random Junk). Brew by dropping ingredients into the cauldron, waiting for the splash, then filling a bottle.

Unlocking the Potions Room
The Potions Room becomes available after completing all three nights and finishing your first full run. Once unlocked, it remains accessible in all future runs. Inside, you'll find a working cauldron, several starter potions, loose ingredients, and at least one wooden ladder leading to bonus loot.
This room serves as one of the earliest sources of both survival tools and gold. If you don't immediately need the potions for healing, selling the starter brews and ingredients to the shop provides a strong early economy boost. That gold can fund spell purchases or better equipment for subsequent runs.

The Five Potions and Their Recipes
Vitality Potion restores your health to full instantly, regardless of current damage. Combine a Carrot, Five-leaf Clover, and Feather to create it. This is your most reliable emergency heal and worth keeping in reserve.
Strength Potion grants super physics, allowing you to lift and throw heavy crates that normally can't be moved. A single Normal Mushroom is all you need. This potion is valuable for progression because moving heavy objects opens new areas and creates destruction opportunities.
Invisibility Potion makes you invisible to monsters for a short duration. Brew it using a Susroom (the green and blue spotted mushroom variant). This potion is especially useful when you need to slip past dangerous enemies without engaging.
Flight Potion grants temporary flight. Use a Phoenix Feather to create it. This lets you reach elevated areas and escape ground-based threats quickly.
Nasty Potion applies a Dizzy debuff that reverses your controls and blurs your vision. It requires a Small Bat, a Bottle, and Random Junk. This is primarily useful for disrupting enemies rather than helping yourself, though it can create chaotic situations.

How to Brew Potions
Step 1: Locate a green cauldron. These are found in the Potions Room and occasionally elsewhere during runs.
Step 2: Drop your chosen ingredient into the cauldron. Wait for the splash reaction to occur.
Step 3: Fill an empty or broken bottle from the cauldron. Broken glass bottles found on the floor work exactly like empty bottles and are preferable to buying new ones from the shop.
The brewing process is straightforward and repeatable. Each ingredient creates a specific potion effect, so knowing your recipe combinations beforehand saves time during tense moments.

Finding and Using Ingredients
Ingredients scatter throughout the tower as natural loot during exploration. Carrots, mushrooms, feathers, and clovers are commonly found on floors, shelves, and hidden corners. Rarer items like Susrooms require more thorough searching in less obvious locations.
You can eat some ingredients raw in emergencies, though this is usually inefficient. Carrots and clovers restore small amounts of health when consumed directly. Normal mushrooms should almost never be eaten raw because the Strength Potion they create is far more valuable for progression.
Susrooms are especially risky to consume raw, as they can trigger random negative effects. Brewing them into the Invisibility Potion is the safer choice. The Potions Room itself guarantees at least one ready-made Vitality Potion accessible via the ladder, making it the safest heal in the game if you can reach it.

Potion Mechanics and Limitations
Only one potion effect can be active at a time. Drinking another potion replaces your current effect immediately. This means you need to choose your timing carefully—using Invisibility when you need Vitality, for example, leaves you vulnerable to damage.
The Strength Potion increases physics interaction only and does not boost combat damage. Its value lies entirely in moving heavy objects and accessing restricted areas, not in fighting enemies directly.
Broken bottles work identically to empty bottles for brewing purposes. You should always prioritize collecting broken bottles from the ground over purchasing new ones from the shop, as this saves gold for other upgrades.