Soda ash detail.png

Soda ash is obtained from cooking seaweed, swamp weed, or kelp on a range or fire. It is an ingredient for making glass in crafting, along with a bucket of sand. It must then be smelted in a furnace to make molten glass. It can also be obtained as an uncommon drop from killerwatts and dust devils.

Soda ash is usually obtained by gathering seaweed, kelp or swamp weed in areas such as Dorgesh-Kaan, the beach near Rellekka and Keldagrim, Entrana, Karamja, or the Piscatoris Fishing Colony (upon completion of the Swan Song quest). Soda ash can also be obtained by pickpocketing Ithell workers in Prifddinas.

Making soda ash gives you 1 Cooking experience.

Soda ash can be converted into Molten glass without needing a bucket of sand by using a Desert amulet 2 or higher. This can be done 50 times a day, or 100 with a Desert amulet 3 and 150 with a Desert amulet 4.

Cooking seaweed into soda ash yields a profit/loss of -19 coins each.

Drop sources

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For an exhaustive list of all known sources for this item, see here.
Source Combat level Quantity Rarity
Corrupted worker11340Common
Dust devil854Common
Dust devil (elite)954–80Common
Ithell workerN/A1Uncommon
Rock lobster1001Uncommon


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