Mushroom & onion can be created by members with level 57 Cooking. Making mushroom and onion gives 120 Cooking experience and heals 110 life points when eaten.
To make mushroom and onion, obtain a knife, bittercap mushroom, onion, and two bowls:
- Use a bittercap mushroom with a bowl and cook it on a range to make Fried mushrooms.
- Use an onion with another bowl and cook it on a range to make Fried onions.
- Finally use one bowl on the other bowl.
Mushroom and onion may be added to a potato with butter to make mushroom potato.
Dropping monsters
- For an exhaustive list of all known sources for this item, see here.
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| Source | Combat level | Quantity | Rarity |
|---|---|---|---|
| Elite dark ranger | 79 | 1 | Unknown |
| Giant wasp | 66 | 1 | Unknown |
Potatoes, toppings, and ingredients | |
|---|---|
| Potatoes | |
| Toppings |
 Pat of butter Chilli con carne Cheese Egg and tomato Mushroom & onion Tuna and corn |
| Ingredients |
 Chopped garlic Spicy sauce Uncooked egg Scrambled egg Sliced mushrooms Fried mushrooms Chopped onion Fried onions Sweetcorn (bowl) Chopped tuna |
| Other |
 Rotten potato Really rotten potato Golden potato Strange potato |
