Potted Shrimp

The Morecambe Bay shrimp pot comes out of the fridge as a small white tub with a hard yellow disc of butter sealing the top. The disc has to be broken with a teaspoon. Underneath it, packed tight in spiced butter and pale pink against the yellow fat, are the shrimps the pot exists to hold. Crangon crangon, the small brown shrimp of the bay, has been potted in the same way along this coast for more than two centuries, and the sandwich is the pot melted out onto brown bread and closed. The butter is not a serving flourish. It is the technique the food is named for, and it does as much work in the sandwich as the shellfish does.

The shrimp itself is small. About the size of a thumbnail. Boiled in seawater on the boat. Peeled by hand on the dock by retired fishing-village women working by the pound. The catch arrives at the kitchen already cooked, by a tradition that goes back to the small wooden inshore fleet of the 19th century. The shrimps then go warm into a pan of clarified butter spiced with ground mace as the leading note, nutmeg behind it, a turn of cayenne for heat, and a little salt; the shrimps are gently coated rather than cooked through again. The mix is packed firm into individual pots and the pots are topped with a second pour of clear melted butter that sets into the sealing disc on the surface. James Baxter and Son, the Morecambe firm trading since 1799, ran the version that for decades held two Royal Warrants from Buckingham Palace, and Furness Fish on the same coast carries the trade today.

The reason mace leads, and the reason it leads in a quantity heavier than a modern cook would expect, is that a brown shrimp is faint. Crangon is a sweet but quiet shellfish, almost mild against a bigger Atlantic prawn, and a buttered, plain-cooked one on bread would slip past the palate almost unnoticed. The spiced butter is the seasoning the shrimp does not bring, and it is calibrated to season the shellfish through rather than to read as a curried or chilli filling on its own. The cap of clarified butter on top does the second job: it air-locks the pot so the shrimps under it keep for weeks rather than days, which is the entire reason the dish exists in the first place, and the cap is what allowed Morecambe to send its catch by overnight train to London markets after the Lancashire railway reached the bay in the mid-19th century.

The sandwich fails component by component. Spread the chilled shrimp pot straight onto cold bread and the butter sits in lumps and the spice reads as a pungent block against the wheat; warm the pot to the gentle slump where the cap softens into the body without melting and the mix goes onto the slice as a coating that carries the spice evenly. Cut the bread too thin and the warm butter soaks straight through the crumb and the slice slumps wet; pick a coarse seeded loaf and the seeds fight the small clean snap of the shrimp. Beat the shrimp to a paste, even by accident with too vigorous a spread, and the dish becomes a different sandwich, the whole-shrimp texture replaced by a smooth fish paste of the kind sold under separate labels. The shrimp stay whole or the named dish does not survive the bite.

Lift one off the plate and the smell is mace first, warm and slightly floral and old-cellar, with the clean briny note of the shrimp arriving a beat under it and the butter laying a soft dairy weight over both. The slice is at room temperature. The bread gives quietly under the teeth, then the shrimps come through in small distinct snaps inside the slumped butter, each one cool and sweet and faintly of the sea. The cayenne arrives last as a slow warm sting at the soft palate that does not quite bite. A squeeze of lemon over the cut face lifts the sweetness and stops the butter eating slick. The bread holds its body until the last bite because the brown loaf was chosen for it.

The cultural register is the Lake District tearoom and the Lancashire pub more than the city sandwich shop. Order one at a National Trust tearoom round Windermere or a pub in Cartmel or Grange-over-Sands and what comes out is the pot served with the disc still intact, brown toast or fresh bread alongside, the eater building the sandwich at the table from a hot teaspoon and a slice of lemon. The shrimps are nearly always specified by their water, Morecambe Bay, and the pot at a good kitchen is bought in from one of the few named coastal shellfish houses by reputation. A buttered slice of plain brown loaf, warmed cap, and a wedge of lemon is the standing order; mayonnaise and lettuce are an alien intrusion the dish does not take.

The variations move along the potting-and-paste shelf and each carries its own separate name. Potted crab takes the same butter-and-spice approach with the pounded white and brown meats of a cooked crab. Potted lobster runs the same logic with a richer richer shellfish at higher cost. Gentleman's Relish, the concentrated anchovy paste sold under the Patum Peperium label since 1828, is the savoury fish version used in much smaller measure on hot toast. The fish-paste and bloater-paste sandwiches of the wider British paste larder share the seal-under-fat technique with cured fish or smoked herring instead. A plain prawn sandwich, by contrast, is built with whole sweet cold-water prawns and butter only, with no spiced or potted treatment at all; that builds toward a different idea entirely.

Origin and history

Potting as a preservation method predates the dish: the technique of sealing cooked meat or fish under a cap of clarified fat to keep it for weeks was already established in English cookery by the Tudor period. Hannah Glasse, the most-read English cookbook author of the 18th century, published a method for shrimps potted in spiced butter in her 1747 bestseller, locking the form into the printed record in the same generation when Morecambe was building the shrimp out as a regional product.

The fishery on the bay is older than the printed recipe. James Baxter and Son of Morecambe, the firm whose name became synonymous with the dish, was established in 1799 and traded continuously until the family stepped back from full trading in the 21st century. Baxter's pots carried Royal Warrants under both George VI's queen consort, the Queen Mother, and Queen Elizabeth II. The railway pulled the trade beyond the bay: the Morecambe branch line, authorised by the Morecambe Harbour and Railway Act of 1846, opened the village to overnight rail freight on 12 June 1848, and the potted pots could travel south in their butter seal. London fishmongers and clubs took up the dish through the second half of the 19th century.

The catch itself is what the dish ultimately depends on, and the Morecambe Bay brown shrimp is listed on the Slow Food Foundation's Ark of Taste as a regional food at risk, with the inshore fleet down to a handful of family boats. Furness Fish at Flookburgh on the Cumbrian side of the bay, founded by Les Salisbury in 1984, and the smaller producers along the Lancashire shore continue the hand-peel, boil-on-the-boat, pot-under-butter method that the trade ran on through the Baxter years. A pot served at a Lake District tearoom in 2026 is the same dish, by the same hand-peel and butter-seal technique, as the pot Baxter and Son was packing for the London markets when their Morecambe firm opened in 1799.