Stand on any storied rock ledge in Japan on a winter morning and you will see the same ritual before a single cast is made: an angler bent over a bucket, folding krill and sweet prawn through a fragrant powder mix until the whole batch holds together like damp sand. That ground bait — komase to the Japanese, berley (or burley) to us — is the engine room of ISO fishing. Done properly, it pulls fish out of the wash, holds them in your drift lane and times their feeding to the arrival of your hook bait. With the late-winter luderick run in full swing along the Australian east coast, there is no better moment to learn ISO berley the Japanese way. Here is exactly how it is prepared — and how to adapt it for our rocks.
What Is Berley — and Why Japanese Anglers Treat It as Half the Battle
Berley is any ground bait or chum introduced to the water to attract fish and hold them near your presentation. In ISO fishing — the Japanese discipline of float fishing from rocky shores (iso, 磯, means "rocky shore"; if the style is new to you, start with our introduction to ISO fishing for Australian anglers) — the ground bait is not an afterthought scattered about when the bite goes quiet. It is a system, prepared as deliberately as the float itself.
Japanese anglers call their mix komase, and competition ISO anglers will happily tell you the komase decides the day before the float ever touches the sea. The mix does three jobs at once:
- Attracts — scent and suspended particles draw fish from the surrounding wash and current lines.
- Holds — a steady, rationed feed keeps fish circling in one strike zone instead of following the scent trail away.
- Synchronises — the sink rate of the feed is matched to the sink rate of the hook bait, so your offering falls through the column looking exactly like everything else the fish are eating.
One housekeeping note for Australian readers: you will see both berley and burley in print. Both spellings are accepted Australian English for the same thing — we use "berley" here, but plenty of gear labels (and plenty of old salts) write "burley". Either way, it is the same craft.
The Japanese ISO Berley Formula: Krill, Prawn and Powder
Walk into any coastal tackle shop in Japan and you will find freezers full of komase base and shelves of powdered additives. The ingredient list is short — the classic recipe has just two layers.
The base bait: krill and sweet prawn
The foundation of nearly every Japanese blend is okiami — Antarctic krill — sold in frozen blocks (a 1kg block is the standard session size), sometimes supplemented with chopped amaebi (sweet prawn) for extra scent and larger feed particles. The krill does the heavy lifting: it is oily, strongly scented, and its small body size feeds fish without filling them up. In Australia, 1kg frozen krill blocks and prawn off-cuts from your local tackle or seafood supplier do the identical job, and a splash of tuna oil is a popular local addition — fish home in on the smell long before they see the first particle.
The binder: panko-style powders
The second layer is a dry powder folded through the thawed krill. Japanese anglers use purpose-made blends — typically a panko-style bread-crumb base cut with crushed shell, dried krill meal and binding flours. The powder controls three things:
- Binding — enough starch to let you squeeze a ball that holds its shape on the scoop, then breaks up on the surface.
- Cloud — fine particles that mist through the water column, giving the school something to see and taste without anything to eat.
- Sink rate — heavier, denser blends punch through wash and current to feed deep; lighter blends hang in the top metre for surface feeders.
You do not need a specific Japanese brand to replicate the concoction. Plain panko crumb, plain bread crumb, or a locally available pellet feed crushed fine will all build the same three properties. What matters is understanding the ratio, not the label on the bag.
The consistency test
The finished mix should behave like damp beach sand above the high-tide line: squeeze a handful and it forms a ball; flick it and it breaks apart. Too wet and it lands as a single lump that sinks straight past the fish. Too dry and it explodes on the cast, feeding the seagulls instead of the luderick.
How to Mix ISO Berley, Step by Step
Japanese anglers mix komase at the car park or on the ledge, in a rigid-walled burley bucket with a flat mixing tray. Here is the sequence, exactly as you will see it done on the famous ledges of Kyushu and the Kii Peninsula:
- Part-thaw the krill block. You want it soft enough to break apart but still cold — fully thawed krill turns to mush and ruins the texture.
- Shave and chop the block into the mixer with a mixing knife or spade edge, breaking up any frozen clumps until the krill is loose and even.
- Add powder in stages. Fold a third of your powder through, mix, then add more. Dumping the whole bag in at once creates dry pockets that scatter on the throw.
- Add seawater a splash at a time. The mix darkens and tightens as it takes up the saltwater. Stop the moment it passes the squeeze test — you can always add more, you can never take it out.
- Rest it for ten minutes. The powder finishes absorbing moisture and the batch firms up noticeably. Japanese anglers use this window to rig their float.
- Cut and turn the mix once more before fishing, so the texture is uniform from the first scoop to the last.
A purpose-built mixer bucket makes every one of those steps easier — rigid walls to cut against, a wide mouth for folding, and a lid for the walk out. Browse our burley mixers and buckets for the JDM-style gear built for this exact job.
How to Berley: Delivery Is a Skill of Its Own
Preparing the mix is half the craft. Getting it into the strike zone — accurately, rhythmically, in the right quantity — is the other half, and it is where Japanese technique is most distinctive.
The tool is the hishaku, the long-handled berley scoop or ladle you will see strapped to every serious angler's kit. A cupped head on a stiff 60–80 cm handle lets you flick a compact ball of feed 10, 20, even 30 metres with a wrist snap — far enough to feed a drift lane you could never reach by hand, and accurately enough to land repeated scoops inside a dinner-plate-sized target.
The delivery rhythm matters more than volume:
- Little and often beats occasional bombardment. Two or three compact scoops every few minutes keeps fish interested without feeding them full.
- Feed the current, not the float. Land your feed up-current of where you want the fish to feed, so the trail washes through your drift lane. In wash-zone fishing, that usually means dropping it right at the edge of the foam.
- Berley first, then cast. Put two scoops in, let the trail establish, then swing your float in so the hook bait arrives with the feed — not before it, not after.
Synchronising berley and bait
This is the detail that separates this style from casual chumming. Japanese anglers deliberately match the sink rate of the komase to the sink rate of the hook bait, then present it inside the falling komase column. The fish are already feeding confidently on identical particles; your bait is simply one of them with a hook in it. Your float setup has to cooperate — a correctly rated and trimmed ISO float drifts at current speed and holds your bait at the desired depth, so it stays in the trail. If float control is the weak link in your system, our guide on how to read the water and set your float covers it in depth.
Scoops, Buckets and Accessories: The Berley Tackle Worth Carrying
Japanese anglers treat these accessories with the same seriousness as rods and reels, because a few well-chosen pieces of fishing tackle make the whole routine faster and cleaner. The first is the scoop itself: a stiff-shafted burley scoop such as the Daiwa Tournament Long Caster II throws a tighter, longer ball than any bargain ladle, while a titanium-cup design like the Kizakura Titanium Shaku II releases the mix cleanly with a single flick — and the Daiichiseiko berley scoop for bait fishing is built in the same competition mould. Next comes water management: a collapsible drop bucket such as the Daiwa Provisor foldable water bucket lets you draw seawater off the ledge to tighten the mix, rinse the scoop between throws and wash the smell off your hands before you touch your reel. Finally, give the rod somewhere safe to live — with both hands in the batch, a Daiichiseiko rod holder keeps an expensive ISO outfit off the rocks and out of the salt spray. None of these accessories is glamorous; every one of them buys you more drifts per session.
Berley for Luderick: The Australian Green-Weed Twist
Here is where Japanese method meets Australian quarry. Luderick (blackfish) are primarily weed grazers, so the classic east-coast luderick feed is not krill-based at all — it is finely chopped green weed or sea cabbage mixed through damp beach sand, sometimes with a little bread crumb to bulk it out. The sand is the delivery vehicle: it carries the weed fragments down through the water column and creates a sinking column of exactly what your hook carries.
Apply the Japanese principles to the local recipe and your catch rate climbs:
- Consistency: the sand-weed mix should squeeze into a ball and break up on landing — the same damp-sand test as komase.
- Rhythm: a small handful or scoop every few drifts, landed up-current of the float, beats a bucketload at the start of the session.
- Synchronisation: chop the weed in your batch to the same length as the weed on your hook, so the fish cannot tell the difference.
In deeper water, or when bream and drummer are in the mix with the luderick, a hybrid batch — krill-and-powder komase with chopped weed folded through — draws both species into the same drift lane. For the full rig to fish over that trail, see our complete JDM luderick setup.
Berley for Rock Fishing: Safety First, Rules Checked
Two quick notes before you mix your first batch on an ocean ledge.
Safety. Berley draws you into a routine — head down over the batch, eyes off the sea. Never let it. Fish with a mate, watch the swell for several minutes before you commit to a ledge, and remember that in declared high-risk rock fishing areas of NSW, wearing an appropriate lifejacket is a legal requirement. Cleated boots and a conservative attitude to swell have saved more sessions (and lives) than any komase recipe.
Rules. Berleying is a normal, generally permitted part of recreational fishing in NSW, but rules on berleying can vary by location and can change — marine park sanctuary zones are the obvious example. Check the current NSW DPI recreational fishing rules for your spot before your session, and keep quantities sensible: the trail is there to attract fish, not carpet the bottom.
Matching Your Berley to the Rest of Your ISO Tackle
Berley gets the fish feeding; the tackle converts them. The Japanese system works because every component is matched — and the rod is central to it. A soft, parabolic ISO rod lets you drift light floats through the berley trail and cushion the surging fight of a big luderick or drummer on light leader. The Daiwa Liberty Club ISO rod is the classic genuine-Daiwa entry point to the style, while the tournament-grade Gamakatsu MasterModel II Onaga ISO rod shows just how far Japanese rock-fishing refinement goes. Between float and hook, a supple, abrasion-resistant trace such as the Sanyo Applaud ISO leader line keeps the presentation natural inside the trail. Round the kit out with a burley scoop, float stoppers and the other small ISO accessories that make the system work.
Everything we stock is genuine Japanese fishing tackle with full Australian warranty — the same gear you would find on the shelves in Japan, backed locally.
Ready to Mix Your First Batch?
ISO berley rewards the same discipline as every other part of Japanese rock fishing: prepare deliberately, feed rhythmically, and synchronise everything with your float. Get the consistency right, feed little and often, and keep your hook bait falling inside the trail — the luderick season is on right now, and the anglers doing those three things are the ones filling their keeper nets. Nothing you carry onto the rocks will increase your chance of catching a winter feed more than a well-prepared berley bucket. Gear up with genuine JDM fishing gear at FishingTST and put a proper komase routine to work on your next session.
FAQ: ISO Berley
Q1: What is ISO berley made of?
The classic Japanese ISO berley (komase) is a frozen krill base — sometimes with chopped sweet prawn — folded through a panko-style powder that binds the mix, adds a scent cloud and controls sink rate. In Australia, frozen krill blocks plus plain bread crumb or crushed berley pellets reproduce the same mix.
Q2: Berley or burley — which spelling is correct?
Both. "Berley" and "burley" are accepted Australian spellings for ground bait used to attract fish. Tackle brands and fisheries publications use both interchangeably; this guide uses "berley".
Q3: What berley should I use for luderick off the rocks?
Finely chopped green weed or sea cabbage mixed through damp beach sand, with a little bread crumb if you want extra bulk. Chop the berley weed to the same length as your hook bait and feed a small amount every few drifts, landed up-current of your float.
Q4: How often should you berley when ISO fishing?
Little and often. Two or three compact scoops every few minutes maintains a steady trail that holds fish in your drift lane without filling them up. Dumping large amounts at the start of a session feeds the fish full and pushes the school deeper.
Q5: Do I need a special bucket to mix berley?
A purpose-built berley mixer bucket makes a real difference: rigid walls to cut and fold the mix against, a wide mouth for turning it, and a sealed lid for carrying it onto the rocks. A long-handled berley scoop then lets you deliver compact, accurate scoops well beyond hand-throwing range.
