The palungan salt making method is East Bali’s centuries-old technique of filtering seawater through black volcanic sand, then sun-evaporating the concentrated brine in hollowed coconut trunks called palungan. It is one of the last surviving sand-salt traditions on earth — and its closest living relative is the agehama method of Japan’s Noto Peninsula, a craft so similar in logic and labor that salt scholars often mention the two in the same breath.
Both traditions use a beach as a filter: sand concentrates the sea’s salinity while a slow, open-air finish preserves the trace minerals that give artisan salt its character. This guide walks through the palungan process step by step, summarizes agehama, and compares the two side by side.
What Is the Palungan Salt Making Method?
Palungan salt making is practiced today in a handful of coastal villages in East Bali, most famously Kusamba in Klungkung Regency and Amed in Karangasem. The word palungan refers to the long troughs carved from coconut tree trunks in which the final crystallization happens. Everything about the method is elemental: sea, black sand, coconut wood, sun, and wind. No additives, no fuel, no machinery.
Kusamba’s salt has been recognized by Slow Food’s Ark of Taste as a traditional product at risk of disappearing, while Amed — appointed in the 17th century as salt producer to the King of Karangasem — has its traditional technique protected by a Designation of Origin. If you want the deeper story of the village itself, our Kusamba sea salt page traces the families who still work these beaches.
The Palungan Process, Step by Step
1. Carrying seawater to the sand fields
Farmers collect seawater in buckets and carry it to flat beds of fine black volcanic sand prepared just above the tide line — physical, repetitive work, and the first reason each kilogram of finished salt represents hours of labor.
2. Spraying the volcanic sand three to four times
The seawater is sprayed over the black sand repeatedly — typically three to four passes — and left to dry under the tropical sun between applications. As the water evaporates, salt crystals concentrate in the sand grains. Salt makers often describe this stage as a natural distillation: the beach itself becomes the first evaporation surface.
3. Raking and collecting the salt-laden sand
Once the sand is saturated with crystallized salt, it is raked up and gathered into a large wooden filtration box inside the farmer’s hut.
4. Filtering a high-salinity brine
Fresh seawater is poured over the collected sand. As it percolates through, it dissolves the concentrated salt and drains from the bottom of the box as a dense, high-salinity brine — far saltier than the ocean. This filtration step is the technical heart of the method, and the one it shares most closely with agehama.
5. Evaporation in the coconut trunks
The brine is poured into the palungan — hollowed coconut trunks arranged in long rows facing the sun. Wind and heat do the rest. In Kusamba, crystallization in each trunk can take up to five days before the salt is ready to harvest.
6. Hand-harvesting the crystals
The delicate crystal layer that forms on the surface is hand-raked and drained, producing small, bright white crystals with medium salinity, gentle umami, and a natural sweetness. On good dry-season days a farmer may finish around 10–15 kg. The finest surface crystals are skimmed separately and sold as a Balinese-style flower of salt. Every stage is documented on our salt making process page.
Agehama: Japan’s Sand-Salt Craft on the Noto Peninsula
On the Noto Peninsula in Ishikawa Prefecture, salt makers practice agehama, the “raised beach” method. The choreography is strikingly familiar: seawater is carried up from the shore and hand-scattered in wide arcs over compacted sand terraces built above the tide line. The sun evaporates the water, the salt-rich sand is raked and gathered, and fresh seawater is filtered through it to draw off a concentrated brine.
The decisive difference comes at the finish. Where Bali entrusts the final evaporation to sun and wind in coconut trunks, Noto’s cooler, wetter climate demands fire: the brine is boiled down in large flat iron kettles over a wood fire, and the crystals are raked from the pan. Agehama is celebrated in Japan as a heritage craft of the Okunoto coast, kept alive by a small community of producers — the same fragile, family-scale story that defines Kusamba and Amed.
Palungan vs Agehama: Side-by-Side Comparison
| Aspect | Palungan (East Bali) | Agehama (Noto Peninsula, Japan) |
|---|---|---|
| Sand medium | Fine black volcanic beach sand, sprayed with seawater 3–4 times | Compacted sand terraces above the tide line, hand-scattered with seawater |
| Brine concentration | Seawater filtered through raked, salt-laden sand in a wooden box | Seawater filtered through raked, salt-laden sand into collection channels |
| Evaporation vessel | Hollowed coconut trunks (palungan), sun and wind only | Flat iron kettles boiled over a wood fire |
| Energy source | Entirely solar; zero fuel | Solar for the sand stage, firewood for the finish |
| Crystal result | Moist, bright white crystals; surface layer skimmed as flower of salt; gentle umami and sweetness | Fine boiled crystals with the rounded, mineral character prized in Japanese kitchens |
| Typical yield | Around 10–15 kg per farmer on a good dry-season day | Small-batch, kettle-limited production |
| Preservation status | A few families remain; Kusamba listed on Slow Food’s Ark of Taste; Amed protected by a Designation of Origin | Heritage craft of the Okunoto coast, maintained by a small number of producers |
Why Sand-Filtered Salt Cannot Be Replicated Industrially
Industrial vacuum evaporators are engineered to strip seawater down to nearly pure sodium chloride: fast, uniform, and flavor-flat. Sand-salt methods work in the opposite direction. The volcanic sand filtration and slow open-air crystallization retain the sea’s wider mineral signature — Indonesian sources describe more than 80 trace minerals in Balinese artisan salt — along with natural moisture that makes the crystals dissolve slowly rather than vanish in a sharp salty flash.
That is why palungan salt tastes layered where refined salt tastes loud: clean salinity first, then umami, then a faint sweetness that lingers. The most delicate expression of this is the skimmed surface layer, which we harvest and sell as fleur de sel of Bali — the direct Balinese counterpart to the celebrated finishing salts of France and Japan.
Bali’s Place Among the World’s Last Sand-Salt Traditions
Sand-filtration salt making once existed on coastlines across Asia and Europe. Today it survives in only a few places, and East Bali is one of them. The work is seasonal — production peaks roughly August through November, when sun is strong and rain is rare — and weather-dependent, which is why it never industrialized. Every jar is the product of one farmer, one beach, one stretch of dry-season sky.
Set beside agehama, Balinese salt is no rustic curiosity but one half of a matched pair of living heritage crafts, equal in method and prestige to a technique Japan treats as a cultural treasure. Choosing this salt is a direct way to keep the tradition economically alive.
Frequently Asked Questions
What is the palungan salt making method?
It is East Bali’s traditional technique of spraying seawater over black volcanic sand three to four times, raking the salt-laden sand, filtering a concentrated brine through it, and sun-evaporating that brine in hollowed coconut trunks (palungan) — crystallization can take up to five days per trough in Kusamba.
How is palungan salt different from agehama salt?
Both filter seawater through sand to build a concentrated brine. The finish differs: palungan salt crystallizes slowly in coconut trunks using only sun and wind, while agehama brine on the Noto Peninsula is boiled in iron kettles over a wood fire — moist, sun-formed crystals in Bali versus fine boiled crystals in Japan.
Why does sand-filtered sea salt taste different from regular sea salt?
The sand filtration and slow open evaporation preserve a broad spectrum of trace minerals and a little natural moisture, giving the salt gentle umami, mild sweetness, and a slow dissolve — qualities industrial vacuum-evaporated salt, close to pure sodium chloride, cannot offer.
When is palungan salt produced in Bali?
Production is concentrated in the dry season, peaking around August to November when sunlight is abundant and rain is minimal. In the wet months output falls sharply, which is why genuine palungan salt is inherently limited and seasonal.
Can I watch the palungan process in person?
Yes — the salt fields of Kusamba and Amed can be visited, and the dry season is the best window to see harvesting. Private East Bali culinary itineraries that include the salt coast can be arranged through our partner operator Bali Premium Trip, or ask us directly.
Taste a Tradition the World Almost Lost
Start with the full photo walkthrough of our salt making process, then meet the makers on the Kusamba sea salt page. For tastings, wholesale, or private-label enquiries, message us on WhatsApp at +62 811-2859-0000 or email [email protected] — we ship Bali’s sand-filtered salt worldwide, from single gift jars to chef-grade bulk.