saltworksTHE PLACE
Salt with an address.
This is sea-salt production, despite the lake name. [1]
THE METHOD
How the salt is made.
Seawater concentrates in the main lake and successive ponds before entering crystallisers. Machinery harvests the salt crust, which is washed in brine and stockpiled. The site also has refining operations; the operator describes re-washing, crushing, drying and screening. The operator also describes a separate evaporation step for its flaky sea salt. [1] [2]
Process described by the operator; method categories are editorial groupings. Not independently inspected.
THE HARVEST
What is made here.
VISITING
Access unconfirmed
Public access has not been established from the reviewed sources. Contact the producer before planning a visit.
Reviewed 2026-10-03. Confirm current access directly before travelling.
Check with the producer (opens in a new tab)What still needs checking
- This profile describes the Grassmere site, not the origin of every Dominion Salt product or batch.
- Public site access and tours are unconfirmed; views from a road do not imply permission to enter.
- Flaky salt has an additional evaporation step; the full factory process is not established in this profile.
- The product list covers solar-harvested salt, including subsequent refining; it is not a complete inventory of refinery outputs.
FOLLOW THE EVIDENCE
Sources & review.
- Dominion Salt — our locations (opens in a new tab)Operator source · Reviewed 2026-10-03Lake Grassmere, Marlborough: pumped seawater, concentrating/crystallisation ponds, mechanical harvest, brine wash, stockpiling and refinery. Distinct Mount Maunganui operations also described.
- Natural sea salt and Marlborough flaky salt (opens in a new tab)Operator source · Reviewed 2026-10-03Operator distinguishes solar-harvested salt from flakes formed in a purpose-built evaporator.
A source review checks what the operator publishes. It is not certification or an endorsement. Our editorial approach