Fish Poachers for Salmon: How to Pick the Right Size Pan

Key takeaways

• Most supermarket salmon sides up to around 1.5 kg need a poacher roughly 40–45 cm long to lie flat without bending.
• For whole salmon, look for long, oval poachers in the 60 cm range, or accept cutting the fish into two sections to fit a 45 cm pan.
• A depth of 8–10 cm gives enough room to fully submerge thicker salmon pieces and use a lift-out rack comfortably.
• If you mainly cook fillets and smaller pieces, a compact microwave fish poacher such as the Easycook microwave fish poacher can be more practical than a long oval pan.
• Check your hob, oven and dishwasher dimensions before buying, especially for long stainless steel poachers that double as serving dishes.

Why this category matters

Salmon is one of the most forgiving fish to cook gently, but it is also long, thick and delicate. When you try to squeeze a generous side of salmon into an undersized pan, you usually end up breaking it in half or curling it around the edges. Both options make even poaching harder, and serving at the table less impressive. The right-sized fish poacher lets salmon sit in a gentle bath of liquid, supported and undisturbed, so it cooks evenly from end to end.

Length and depth are more than convenience issues. A poacher that is long enough for a whole side means you can cook for a small crowd without juggling multiple pans. Enough depth means you can fully submerge the thickest part of the fillet without overfilling to the brim. A snug, lidded design helps keep moisture and heat inside, so you can poach at lower, more controlled temperatures and keep the texture silky instead of stringy.

Well-sized fish poachers also add flexibility in how you cook. A sturdy stainless steel poacher with a rack can move from hob to oven, then straight to the table as a serving piece. A compact microwave poacher can turn frozen salmon portions into dinner with very little effort. Choosing carefully once means you are not constantly compensating for a pan that is slightly too short, too shallow or awkward on your hob.

If you need a broader picture of how poachers stack up against other cookware, the comparison of fish poacher vs steamer vs roasting pan is a useful companion read before you commit to a dedicated pan size.

How to choose

Start by thinking about the salmon you actually cook. Supermarket sides are often around 30–40 cm long, while a modest whole salmon can easily reach 55–65 cm. Individual fillets and frozen portions are much shorter, typically 15–25 cm. If you mostly cook fillets for two people, a compact pan or microwave poacher is often easier to live with than a long oval poacher that hogs cupboard space. If you regularly serve a whole side of salmon at the table, a long stainless steel poacher earns its keep.

As a rule of thumb, your pan should be at least 3–5 cm longer than the salmon you plan to cook, so you have room for aromatics, gentle water movement and easy lifting. For a typical side of salmon up to around 1.5 kg, that usually means a poacher in the 40–45 cm range. If you want to tackle whole salmon, aim for the longest poacher that will fit your hob and oven; you may still need to trim or cut the fish in half, but you will minimise bending and crowding.

Depth matters almost as much as length. A poacher that is about 8–10 cm deep gives you space to submerge the thickest part of the salmon while leaving some headroom between the liquid and the rim. This is especially important if you plan to move the pan in and out of the oven or carry it to the table. A lift-out rack or insert is also useful: it keeps the fish off the base of the pan, improves heat circulation and makes it easier to lift the salmon out in one piece.

Finally, consider shape and compatibility. Oval stainless steel poachers are the traditional choice for whole fish and sides of salmon, and they often work on both hob and in the oven. Long fish pans with a non-stick coating and removable handles are better suited to fillets and pan-poaching, where you want easy turning and crisped skin. Microwave poachers are the most compact option if you rely on frozen portions and quick midweek meals.

Key measurements for salmon

It helps to think in actual measurements instead of vague terms like ‘large’ or ‘extra-long’. Many supermarket salmon sides, trimmed and ready to cook, fall between about 30 and 40 cm in length and 7–10 cm across at the thickest end. They are usually 2–4 cm thick. A poacher that is 40–45 cm long will comfortably hold these sides with room for slices of lemon and herbs around the edges, without forcing any bending.

Whole salmon varies more, but even a fairly modest fish can be longer than 60 cm from head to tail. Unless you have a very long poacher, it is common to remove the head and tail or cut the fish into two sections. If you prefer to keep the fish intact, check your oven and hob first, and measure the maximum pan length they can accommodate. Long stainless steel poachers can be quite narrow, so measure width as well if you have a small oven or compact hob.

Shape, rack and lid decisions

Oval pans mirror the natural shape of salmon, making them ideal for whole fish and long sides. The curve supports the body of the fish and leaves space at the ends for shallots, herbs or other aromatics. Rectangular or fish-shaped pans are more common for fillets and portions, where you are working with shorter pieces and want a generous flat base for even contact with the heat source.

A rack or insert is more than an accessory. It lets you poach in a shallower bath of liquid because steam circulates around the fish, and it makes it much easier to lift a whole side or fillet without breaking. If you plan to serve the salmon in the pan at the table, a well-fitting rack also helps you move the fish out to a platter without leaving half of it stuck behind.

Lids help maintain gentle heat and prevent the surface of the fish from drying out. For oven-poaching and hob poaching on low heat, a tight-fitting lid is a real asset. Open designs can still work well, especially if you are using a microwave poacher that traps steam or a non-stick fish pan for shallow poaching and finishing under a grill, but you will need to be more careful about liquid levels and evaporation.

Before you buy, measure the inside of your oven and the width of your hob. Long fish poachers can be deceptively large, and a few centimetres of mismatch can be the difference between a perfect fit and a pan that never leaves the cupboard.

Common mistakes

One of the most common mistakes is choosing a poacher that is only just long enough for your largest piece of salmon. If your side of salmon is the same length as the pan, the ends get cramped, liquid circulation is restricted and it becomes awkward to lift the fish out without damage. A little extra length gives space for the liquid to move, for aromatics at each end and for the fish to sit naturally without curling or crowding.

Another trap is underestimating depth. Shallow pans can look elegant, but if you can only just cover the thickest part of the salmon with liquid, you risk uneven cooking and dry patches at the surface. You also have less margin for simmering or oven movement without spillage. A deeper pan gives you more flexibility to adjust liquid levels, use a rack and still keep everything safely contained.

Many people overlook compatibility with their hob and oven. Long oval poachers may overhang small hobs, causing hot and cold spots, or may not fit in compact ovens at all. Non-stick fish pans with fixed handles can also run into problems if the handle prevents the pan from sitting centrally in the oven. Checking the size of your equipment before buying is just as important as measuring your salmon.

Finally, buying for the ‘one big occasion’ rather than everyday cooking can leave you with an oversized pan that is impractical most of the time. If you almost always cook two fillets from frozen, a huge stainless steel poacher designed for whole salmon is unlikely to earn its place. In that case, a compact microwave fish poacher or a sturdy fish pan is more realistic and still gives you beautifully poached salmon.

Top fish poacher options

There are many fish poachers and pans that can handle salmon, but three types cover most real-world needs: a long stainless steel poacher with rack for sides and whole fish, a compact microwave poacher for quick portions, and a versatile non-stick fish pan for shallow poaching and pan-cooking. The options below highlight how each style approaches size, depth and everyday practicality.

All three products are widely available and offer slightly different solutions to the same problem: how to support and gently cook salmon without breaking it apart. When you compare them, keep your usual portion sizes in mind alongside the length of your hob and oven. A perfectly chosen size will feel surprisingly effortless to use.

Judge 45 cm Stainless Steel Fish Poacher

This classic long, oval stainless steel poacher is designed around whole fish and generous salmon sides. At about 45 cm long with a capacity of around 7.3 litres, it can comfortably hold most supermarket salmon sides up to roughly 1.5 kg, along with enough poaching liquid and aromatics to surround the fish. The included rack lets you keep the salmon off the base of the pan and lift it out in one smooth movement, which is especially useful when you want to serve the fish intact at the table.

The length and depth make this poacher especially good for oven-poaching and for cooking on larger hobs, where you can heat along most of its length. Stainless steel construction keeps it robust and suitable for everyday use, though it does weigh more than smaller pans. The size can feel large if you mainly cook one or two portions, but if your goal is to poach whole sides of salmon and present them attractively, it is a very natural fit.

You can find this model as the Judge Fish Poacher 45 cm, 7.3 L, Stainless Steel Silver, 45cm, 7.3l. If you prefer to browse through best-selling long poachers side by side, the broader list of popular fish poachers for home kitchens is also useful when comparing capacities and lengths.

Easycook 27 cm Microwave Fish Poacher

If you mostly cook individual fillets or frozen portions, a compact microwave poacher can be far more convenient than a long metal pan. This clear plastic model is around 270 mm long, which suits one or two shorter salmon fillets or portioned pieces up to roughly 25 cm. Instead of fully submerging the fish, you add a small amount of liquid and let steam do much of the gentle cooking, with the lid trapping moisture and flavour.

The main advantage here is practicality. It takes up very little storage space, is quick to set up, and suits busy kitchens where the microwave does a lot of work. The shorter length means it is not designed for whole salmon or long sides, but for regular midweek cooking it makes poached salmon straightforward and repeatable. It is also a way to gently cook salmon straight from frozen, adjusting time as needed while keeping the fish supported and moist.

You can see this option as the Easycook NS626 Microwave Fish Streamer/Poacher, Clear, 270mm, which sits among several similar microwave-safe designs. Browsing the wider best-selling fish poachers and poaching trays will give you a feel for how compact these can be compared with traditional metal poachers.

Kamberg 35 cm Non-Stick Fish Pan

For cooks who like to pan-poach, shallow-poach or combine gentle poaching with crisping the skin, a long, non-stick fish pan is a very flexible tool. This 35 cm pan offers a generous flat base for one or several salmon fillets, with enough length to accommodate a small side or a couple of longer fillets placed end to end. The cast aluminium body heats quickly and evenly, while the stone-effect non-stick coating helps delicate fish release cleanly.

The removable handle is particularly useful when you want to move from hob to oven or simply need the pan to fit into a shorter oven cavity. Depth is more modest than a true poaching pan, so this style suits shallower poaching in a thin layer of stock, wine or water, rather than deep submersion. It is less suited to large whole salmon, but ideal if you like to finish poached fillets under the grill or sear the skin before adding liquid.

You can explore this approach with the Kamberg 35 cm fish pan with removable handle. It is also worth comparing it to more traditional long poachers in the current range of popular fish poachers and pans to see which length and depth profile best fits how you cook now.

When in doubt between two lengths, choose the longer pan that still fits your hob and oven. Extra room rarely hurts, but being a few centimetres too short for your favourite salmon side can be frustrating every time you cook.

Conclusion

Choosing the right size fish poacher for salmon comes down to matching pan length and depth with the way you actually cook. Long stainless steel poachers around 40–45 cm excel with salmon sides and larger gatherings, while compact microwave poachers and non-stick fish pans are better suited to everyday fillets and frozen portions. Measure your favourite pieces of salmon, then measure your hob and oven, and pick the largest practical size that fits both.

If your goal is impressive whole sides of salmon served at the table, a long, rack-equipped poacher such as the Judge 45 cm stainless steel fish poacher is hard to beat for support and presentation. For compact, quick meals with fillets and frozen pieces, a smaller option like the Easycook microwave fish poacher or a versatile non-stick fish pan may fit your routine better and see far more use over time.

FAQ

What size fish poacher do I need for a side of salmon?

Most supermarket sides of salmon are around 30–40 cm long. A poacher about 40–45 cm long gives enough room for the fish to lie flat with space for aromatics and liquid circulation. Something in this range, such as the Judge 45 cm stainless steel poacher, will usually cover most sides up to roughly 1.5 kg.

Can I cook whole salmon in a 45 cm poacher?

A 45 cm poacher is ideal for long sides of salmon, but many whole salmon are longer than this once you include head and tail. You can still use a 45 cm pan by removing the head and tail or cutting the fish into two sections. If you want to keep the fish intact, look for the longest poacher your hob and oven can accommodate and accept that truly large salmon may still need trimming.

Is a microwave fish poacher big enough for salmon?

A compact microwave poacher around 25–27 cm long will not take a whole side or large fillet, but it is very practical for individual salmon fillets and frozen portions. Models such as the Easycook 27 cm microwave poacher are sized for everyday meals for one or two people rather than big centrepiece dishes.

Do I need a rack in my fish poacher for salmon?

A rack is not absolutely essential, but it helps a lot with both cooking and serving. It keeps the salmon slightly above the base so heat and liquid can circulate, and it lets you lift out a whole side more easily without breaking it. If you plan to poach salmon for the table or cook long, delicate pieces, choosing a poacher with a well-fitted rack is a good idea.