How to Cut Whole Coho Salmon: Fillets, Portions & Soup Head

How to Cut Whole Coho Salmon into Fillets, Portions and a Soup Head

A whole silver salmon (coho) can provide far more than two fillets. With a sharp knife and a good cutting plan, you can prepare even dinner portions, preserve the flavorful belly and collar, and save the head and clean frame for a traditional salmon soup. This guide accompanies our Global Seafoods cutting video and concentrates on breaking down a cleaned whole coho into fillets, portions and usable soup parts.

The most common mistakes are working with fish that is too warm, using a dull blade, cutting too far from the backbone, and failing to remove pin bones. Taking a few extra minutes to organize your board and understand the anatomy improves both presentation and edible yield.

Video Feature: Silver Salmon Cutting

This Global Seafoods video feature follows a fresh silver salmon as it is divided into fillet portions and its head is prepared for soup. It complements our separate Coho Cleaning and Gutting Guide. If you want bone-in steaks instead of boneless fillets, see How to Cut Coho Salmon Steaks. These are different cutting methods for different finished products.

What You Need

• One properly chilled whole coho salmon, cleaned and gutted as required
• Sharp 7–9-inch flexible fillet knife, appropriately sized for the fish
• Large nonslip cutting board with a damp towel underneath
• Clean food-safe towels or fish-grip gloves
• Fish-bone tweezers or clean needle-nose pliers
• Heavy knife or appropriate fish-head splitting tool, if preparing the head
• Two or three clean trays for fillets, soup parts and discard

Keep raw fish refrigerated until cutting and place finished parts back in cold storage promptly. A sharp knife is safer to control than a blade that requires heavy force, but every movement should keep your fingers away from the cutting path.

Step 1: Identify the Fish's Starting Condition

Check whether the fish is whole round, head-on gutted, head-off or already partially processed. Inspect for scales and remaining viscera, and clean the cavity appropriately before filleting. Whole fish sold by different suppliers can have different preparation states. Our Fresh Silver Salmon (Coho) is a whole-fish listing; confirm the current variant and handling instructions rather than assuming it arrives ready for every cut.

Step 2: Remove the Head While Saving the Collar

Place the fish on its side and make a controlled angled cut just behind the gill plate and pectoral fin, toward the backbone. Repeat from the other side if necessary to release the head. Avoid cutting too far back into the valuable shoulder and collar flesh. Set the head aside in a clean, refrigerated container if you intend to use it for stock or soup. If the head contains gills, remove them before making broth; gills can give stock an unpleasant flavor.

Step 3: Follow the Backbone to Remove the First Fillet

Start at the head end and turn the flexible knife toward the tail, keeping its edge close to the skeleton. Lift the developing fillet gently so you can see the bone structure. Use long, controlled strokes rather than repeatedly chopping through the flesh. Carefully release the portion along the rib bones and belly. The goal is a clean, flat fillet face with minimal meat left on the frame.

Step 4: Turn the Fish and Fillet the Other Side

Turn the remaining fish over and stabilize it on the board. Follow the backbone again, working toward the tail and keeping the knife in contact with the bony frame. The second side can be more difficult to hold because much of the fish has already been removed. Slow down rather than forcing a cut that could slip. Place both finished fillets on a clean chilled tray.

Step 5: Remove Ribs and Pin Bones

Lay each fillet skin-side down. Carefully trim away the rib cage, guiding the blade along the rib bones while preserving the belly meat. Feel along the centerline for pin bones and remove them individually with clean fish tweezers, pulling gently in the direction each bone lies. Recheck the full fillet before cutting portions. Pin bones can be present even when the large backbone and ribs are gone.

Step 6: Trim the Belly and Decide Whether to Keep the Skin

Trim loose membranes, ragged edges or unwanted parts, but do not automatically discard the belly. It is useful for carefully cooked bites, soups or other preparations. Skin-on portions hold together well during many grilling and pan-searing methods, while skinless portions can be useful in stews or certain baked dishes. If removing the skin, hold the tail-end skin tab firmly and slide a sharp flexible blade almost parallel to the board.

Step 7: Cut Even Fillet Portions

Decide on portions based on the meal. For a typical plated dinner, approximately 5–7 oz of raw fillet per person is a useful starting point, but serving sizes depend on appetite and sides. Cut across the fillet to create portions of reasonably similar thickness, adjusting width as the fish tapers toward the tail. Keep thicker center cuts separate from thinner tail pieces so cooking times can be managed accurately.

Step 8: Split and Prepare the Salmon Head for Soup

The cheeks, collar and cartilage around a cleaned salmon head can add depth to soup or fish stock. Remove the gills, rinse away blood and debris, and use a stable surface and suitable heavy cutting tool if the head needs splitting. Do not attempt to force a light, flexible fillet knife through the skull. For a large head, an experienced fishmonger can split it safely.

Place the cleaned head and suitable frame pieces in cold water, bring to a gentle simmer and skim as needed. Add onion, celery, herbs or other mild aromatics and cook according to a tested fish-stock method. Strain carefully to remove every bone and cartilage fragment before using the broth. Keep all soup components refrigerated until preparation, and cook the finished fish soup thoroughly.

How Much Usable Fish Comes from Whole Coho?

The finished fillet yield depends on whole-fish condition, head and viscera status, fish size, knife skill, skin removal and trimming decisions. A whole-fish purchase includes parts that do not become boneless fillets, so do not compare its pound price directly with pretrimmed portion pricing without accounting for yield. Saving collars, belly and the cleaned head can make fuller use of the purchase, although not every part is suited to every dish.

Best Ways to Cook the Finished Coho Cuts

Fillet portions

Coho fillets work well baked, pan-seared or grilled. Season lightly with lemon, dill or a little ginger and monitor the thickest portion carefully. For the full method, read How to Cook Coho Salmon.

Skin-on grilling pieces

Leave the skin on if you want extra support on a grill. Keep pieces similar in thickness and handle them with a wide spatula. For seasoning options, see How to Grill Coho Salmon.

Collar and belly

These smaller cuts can be roasted or pan-cooked separately, but check for bones and varying thickness. Because they cook at different speeds than center-cut fillets, avoid placing every piece in the same pan and assuming equal timing.

Head and clean frame

Use these for a strained stock or soup after thoroughly cleaning and removing gills. Do not serve a bony soup without carefully straining or checking portions.

For consumer food safety, cook fish to an internal temperature of 145°F (63°C) in the thickest edible portion. FoodSafety.gov's seafood safety guidance also recommends keeping fish cold and refrigerating promptly.

Five Common Whole-Coho Cutting Mistakes

Working on a slippery board

Secure the board and dry the fish surface with clean towels. Never let a heavy fish slide while a knife is moving.

Leaving excess flesh on the bones

Keep the knife close to the backbone and ribs. Deep cuts above the skeleton reduce yield and create uneven fillets.

Using a dull or oversized blade

A flexible fillet knife follows the bone structure more precisely. A heavy knife is reserved for tasks such as safely splitting the head, not fine filleting.

Skipping the pin-bone check

Removing the backbone does not remove all pin bones. Inspect each portion with clean tweezers and fingertips.

Leaving fish warm while cutting other parts

Work efficiently and keep finished pieces refrigerated. Return the head and trim to cold storage if soup will be prepared later.

Coho Filleting FAQ

Should I remove the salmon skin before portioning?

Not necessarily. Skin-on coho holds its shape during many cooking methods and can be removed after cooking if desired.

Can I make steaks and fillets from the same whole salmon?

Yes, you can divide a fish into sections, but a section cut into bone-in steaks cannot then yield the same uninterrupted full-length fillet. Decide your meal plan before cutting.

Is the head safe to use for salmon soup?

A properly handled, cleaned and thoroughly cooked salmon head can be used for stock. Remove gills and strain or inspect meticulously for bones before serving.

How many fillets does one salmon make?

A whole fish generally yields two main sides, which can then be divided into several portions. Actual portions depend on fish size and desired weight.

Should I fillet the fish before freezing it?

Portioning before freezing can simplify meal planning, but always follow product-specific handling instructions and use appropriate freezer packaging. If you do not need the whole fish at once, separate portions into usable meal sizes.

Can I skip the cutting entirely?

Yes. Choose ready-cut Coho Salmon Fillet Portions instead of a whole fish.

Shop Coho Salmon at Global Seafoods

Our Fresh Whole Silver Salmon (Coho) product was active but out of stock at this inventory check. Premium Coho Salmon Fillet Portions were active with stock. Verify current shipping options, selected weight and availability on the live product pages. For related techniques, explore Cleaning and Gutting Whole Coho and Cutting Coho into Steaks.