Here’s a clear, in-universe style guide on how to do alchemy in Oblivion , from your first mortar and pestle to making powerful potions and poisons.

Alchemy basics (what it is and why bother)

Alchemy in Oblivion lets you combine ingredients into potions and poisons that can:

  • Restore or fortify health, magicka, stamina (fatigue), attributes, and skills.
  • Damage health, stats, or apply nasty debuffs as poisons on your weapons.
  • Make a lot of gold by selling high-value potions.

The more you use alchemy, the more your Alchemy skill rises, which makes your creations stronger and unlocks more ingredient effects.

Step 1: Get your first alchemy tools

To start alchemy you need, at minimum, a Mortar & Pestle.

  • You can find a basic Mortar & Pestle very early, including in the tutorial sewers or on low-level loot and in houses/shops.
  • Later, you can buy better-quality versions and additional apparatus from mages, alchemists, or general traders.

Alchemy apparatus (tools) you can eventually use:

  • Mortar & Pestle – mandatory; lets you make potions at all.
  • Retort – improves positive effects of your potions.
  • Calcinator – boosts the magnitude and duration of all effects (both good and bad).
  • Alembic – reduces negative side effects on potions (especially useful when ingredients have mixed good/bad effects).

At low levels, you’ll often just have a Mortar & Pestle; the others are “nice to have” but not required.

Step 2: Open the alchemy menu

Once you have a Mortar & Pestle:

  1. Open your Inventory.
  2. Go to the Misc (or appropriate) tab where the mortar is.
  3. Activate (use) the Mortar & Pestle.

This opens the alchemy interface, where you see:

  • A list of ingredients you’re carrying.
  • Slots for ingredients (up to four).
  • A preview of the potion/poison effects before you commit.

Step 3: Understand ingredient effects

Every ingredient has up to four possible effects, such as:

  • Restore Health
  • Restore Magicka
  • Fortify Intelligence
  • Damage Health
  • Damage Fatigue
  • Resist Fire, etc.

However, your Alchemy skill level determines how many of those effects you can see :

  • Novice (0–24) – you can only see the first effect.
  • Apprentice (25–49) – you see two effects.
  • Journeyman (50–74) – you see three effects.
  • Expert (75–99) – you see all four effects.
  • Master (100) – your potions become significantly more powerful and efficient.

You can also eat an ingredient directly from your inventory to discover one of its effects and gain a tiny bit of alchemy experience.

Step 4: How to actually create a potion or poison

The core rule:

To make a potion or poison, you must use at least two ingredients that share the same effect.

Step by step:

  1. With the alchemy menu open, select your first ingredient.
  2. Select a second ingredient.
  3. Check the preview at the bottom:
    • If both ingredients share an effect (e.g., Restore Health), a potion with that effect will appear in the preview.
  4. Click Create to make the potion/poison.
  5. You can optionally name the potion (helps you sort and remember recipes).

Important details:

  • You can use up to four different ingredients in a single mixture as your skill increases.
  • If the shared effect is beneficial (Restore, Fortify, Resist), you get a potion.
  • If the shared effect is harmful (Damage, Drain, Weakness), you get a poison.
  • Some ingredients have both positive and negative effects, so you might craft something that has multiple mixed effects.

Step 5: Using potions and poisons

Once created:

  • Potions go into your potions inventory tab.
    • Use them from the inventory or hotkey them for quick access in combat.
  • Poisons are applied to weapons:
    • Select the poison, then confirm you want to apply it to your currently equipped weapon.
    • The next hit (or a few hits, depending on effect) will deliver that poison to the enemy.

You can stack effects by drinking multiple potions or re-poisoning your weapon between hits.

Step 6: Early easy recipes (no spoilers, just patterns)

You don’t need a specific list of ingredients to start; you just need to remember this pattern:

  • Look for foods and plants with Restore Health (meats, some mushrooms, and common herbs often have this).
  • Combine two food items that both say “Restore Health” to make your first healing potions.
  • Look for ingredients that say Damage Health or Damage Fatigue to craft basic poisons.

Try this general approach early on:

  • Pick up anything edible : meats, bread, cheese, fruits, mushrooms, herbs.
  • Check their effects in the alchemy screen.
  • Experiment with combining items that share at least one effect.

You’ll quickly learn your own favorite “go-to” combinations.

Step 7: Leveling your alchemy skill fast

To level alchemy, you essentially need to use it a lot. Good habits:

  • Always pick ingredients while exploring: flowers, mushrooms, roots, and food from tables/barrels.
  • When your inventory is heavy, stop somewhere safe and craft all the potions you can.
  • Drink or sell the potions afterward; the XP is from crafting, not from using.
  • Eat single ingredients occasionally to slowly gain experience and reveal effects.

As your skill increases, you:

  • See more effects per ingredient (which means more powerful, multi-effect potions).
  • Unlock stronger apparatus to buy and use.
  • Create potions with higher magnitude and duration, which increases their value for selling.

Step 8: Using all four apparatus together

When you find the other tools (Retort, Calcinator, Alembic), you don’t need to manually “equip” them. Rules:

  • Just have them in your inventory.
  • When you open the alchemy screen, they automatically apply their bonuses.
  • Their quality (Novice, Apprentice, Journeyman, Expert, Master) affects how strong their bonuses are.

Combined effects in simple terms:

  • Mortar & Pestle – base crafting; you always need this.
  • Retort – boosts all positive potion effects (higher restore/fortify, etc.).
  • Calcinator – increases the strength and duration of everything , good and bad.
  • Alembic – reduces negative side effects on potions, making them safer to drink.

A popular setup for strong buff/heal potions is to use all four at higher quality, so you get big positives with minimized negatives.

Step 9: Making money with alchemy

Alchemy is one of the easiest gold-makers in Oblivion:

  • Ingredients are free if you pick them in the world.
  • Potions can sell for much more than the raw ingredients, especially at higher skill levels.
  • You can convert cheap food from inns or guild halls into valuable potions.

Money-making loop idea:

  1. Pick every plant and mushroom you see while traveling.
  2. Gather cheap food ingredients from inns and guild halls.
  3. Craft all possible potions at a safe location.
  4. Sell potions to mages, alchemists, and general merchants.
  5. Reinvest in better apparatus or spell scrolls, gear, etc.

Step 10: Roleplay & “build” ideas

Alchemy fits well into many playstyles:

  • Stealth/assassin – focus on powerful poisons, damage health, and debuff effects.
  • Mage – lots of Restore Magicka, Fortify Intelligence/Willpower, and resist-element potions.
  • Warrior – Restore Health/Fatigue, Fortify Strength/Endurance, Resist Fire/Frost/Shock.
  • Merchant/alchemist – optimize potions for high value, focus on effects that sell well.

You can even “theme” your character around a particular type of potion (e.g., a poisoner who never fights without coating blades, or a hermit who sells only homemade brews).

Quick mini-checklist

If you just want a short play-flow:

  1. Get a Mortar & Pestle.
  2. Collect every plant and food item you can.
  3. Open the alchemy menu via the mortar.
  4. Combine two ingredients that share an effect (like Restore Health).
  5. Craft, drink, and sell potions regularly.
  6. Upgrade your apparatus as you gain gold and skill.
  7. Tailor potions/poisons to your preferred combat style.

Information gathered from public forums or data available on the internet and portrayed here.