Stockfish in verjuice sauce (medieval)

A documented medieval way to serve stockfish

A short recipe preserved in a fifteenth-century English culinary manuscript offers a valuable glimpse into how imported stockfish could be served before the development of many familiar modern preparations.

The dish combines cooked stockfish with a hot sauce of fish broth, parsley, powdered ginger and verjuice.

It contains no tomato, potato or butter sauce.

Instead, its flavour depends upon a carefully balanced combination of savoury liquid, fresh herbs, aromatic spice and acidity.

The result would have been recognizable as a cooked fish course, but its flavour profile differs considerably from most contemporary northern European fish dishes.

This is especially useful for historical reconstruction because the central flavour combination is recorded directly in a surviving recipe.

The measured version below is modern and untested, but the historical ingredient selection is substantially more secure than a recipe invented to evoke a general medieval atmosphere.

Historical name and identity

The historical name identifies a sauce intended for stockfish, rather than a modern complete dish with a fixed name.

The manuscript does not identify one particular cod species or Norwegian production district.

Middle English — Sauce for stokefysshe

Modern English — Sauce for stockfish

Ingredient — Stockfish, unsalted dried fish

Acidic seasoning — Verjuice, Middle English verious

Herb — Parsley, Middle English percely

Spice — Ginger, Middle English gingere

Scientific name — Usually Gadus morhua when made with Atlantic cod

The manuscript evidence

The recipe appears on page 109 of Thomas Austin's 1888 edition, Two Fifteenth-Century Cookery-Books.

The relevant section contains recipes from Ashmole MS 1439, a manuscript associated with fifteenth-century English cookery.

The published text identifies fish broth made from eel, pike or fresh salmon.

It instructs the cook to strain the broth and combine it with chopped parsley, powdered ginger and a little verjuice in an earthenware vessel.

The sauce is boiled together.

Cooked stockfish is held in hot water until it is time to serve. The fish is then transferred to a clean dish and the hot sauce poured over it.

That sequence is unusually informative.

It shows that the stockfish and its sauce could be handled as separate preparations.

It also shows a concern for serving temperature: the fish is kept hot, and the sauce is added hot at the last moment.

The historical source does not specify the weight of stockfish, the exact amount of ginger, a measured volume of verjuice or a modern cooking temperature.

Those omissions must be retained as gaps in the historical record.

Stockfish in late-medieval England

Imported stockfish was important in medieval northern European food networks.

Northern Norway supplied significant quantities of dried fish, while Bergen and other commercial centres helped connect producers with foreign markets.

English consumers encountered imported preserved fish through these networks.

Stockfish had important practical advantages.

It was durable, comparatively transportable and could be stored for longer periods than fresh fish.

It was also useful in societies where religious calendars and customary fasting practices influenced food choices.

Fish could be consumed on days when certain kinds of meat were restricted.

This does not mean everyone in medieval England ate stockfish in the same way or could afford elaborate sauces.

The manuscript recipe belongs to a written culinary tradition. It should not automatically be presented as a recipe eaten by every social class.

The presence of ginger and specially prepared fish broth points to a kitchen with access to particular ingredients and sufficient labour.

What is verjuice?

Verjuice is a sour liquid traditionally obtained from unripe grapes or other acidic fruit.

In French it is called verjus; Italian culinary terminology includes agresto.

Unlike wine vinegar, traditional grape verjuice is not defined by the conversion of alcohol into acetic acid.

Its sourness comes principally from naturally occurring fruit acids.

In unripe grapes, tartaric and malic acids are particularly relevant.

The precise acidity of verjuice depends upon the fruit, its maturity and the production process.

This makes it an effective but variable culinary ingredient.

Verjuice brings sourness without necessarily introducing the characteristic acetic aroma of vinegar.

The distinction matters in historical reconstruction.

Replacing verjuice with vinegar may produce a palatable sauce, but it is not an exact substitution.

Likewise, lemon juice supplies acidity, but it changes the flavour.

The present recipe uses actual verjuice and leaves the final seasoning adjustable.

The role of ginger

Ginger is the rhizome of Zingiber officinale.

In its dried, powdered form, it contributes pungency and aroma.

Its characteristic flavour involves gingerols and related compounds. Processing and heating can alter the balance of those substances.

Powdered ginger also contains aromatic volatile compounds that can be lost during prolonged exposure to heat.

The medieval method requires boiling the sauce ingredients together, but it does not establish a long reduction period.

The modern reconstruction therefore uses relatively short heating.

A small quantity of ginger is sufficient to change the flavour of fish broth without turning it into a strongly spiced sauce.

The role of parsley

Parsley, Petroselinum crispum, contributes fresh green colour and herbaceous aroma.

Its aromatic compounds differ from those of ginger and verjuice.

Chopping increases the exposed surface area and releases flavour into the broth.

Cooking softens the leaves and extracts some of their soluble components.

However, prolonged boiling can diminish the bright character of fresh herbs and dull their colour.

The medieval source instructs the cook to boil the chopped parsley with the other ingredients. It does not specify the exact duration.

The modern preparation reserves a small amount for finishing, an editorial choice rather than an attested historical instruction.

Why fish broth matters

An important detail is the instruction to use broth from eel, pike or fresh salmon.

This creates an additional layer of flavour beyond the stockfish itself.

The choice is not arbitrary.

Different fish yield cooking liquids with different concentrations of dissolved proteins, gelatinous substances, minerals and flavour compounds.

Straining removes suspended solids and produces a clearer sauce.

The broth then functions as a savoury base for the ginger, parsley and verjuice.

The modern recipe uses unsalted light fish broth instead.

That substitution makes the recipe easier to prepare but does not reproduce the exact historical flavour.

A broth prepared from the specified fish would be a closer reconstruction.

Recipe: stockfish with medieval herb and verjuice sauce

Serves 4 · Approximately 45–60 minutes after rehydration · Modern reconstruction, not kitchen-tested

Method

1. Prepare the fish. Cut the stockfish into suitable portions and inspect carefully for bones.

2. Poach gently. Bring 1,500 ml water to a gentle simmer. Add the fish and begin checking tenderness after approximately 20 minutes.

Continue until it is fully cooked and separates readily.

3. Prepare the sauce base. Pour 300 ml unsalted fish broth into a small saucepan.

Add 1 g powdered ginger.

4. Heat the broth. Simmer gently for five minutes.

5. Add acidity and herbs. Add 30 ml verjuice and most of the chopped parsley.

Continue simmering for another two minutes.

6. Adjust the sauce. Taste the sauce.

If the sourness is excessive, dilute cautiously with a little fish poaching water.

The original collection permits an additional 5–10 ml verjuice where necessary.

7. Plate the fish. Drain the cooked stockfish and place it in warmed shallow bowls.

8. Serve immediately. Spoon the hot sauce over the fish, finish with the reserved parsley and accompany with bread.

How close is this to the historical recipe?

The flavour combination is directly supported by the fifteenth-century text.

The use of separate cooking and final serving stages is also supported.

The modern reconstruction departs from the manuscript in several ways.

It uses a generic light fish broth rather than broth specifically prepared from eel, pike or salmon.

It introduces measured quantities absent from the surviving source.

It establishes a cooking schedule that the manuscript does not provide.

It adds a modern food-safety endpoint.

It also includes bread as an accompaniment. Bread is historically plausible, but this particular stockfish sauce recipe does not specify a 240 g bread serving.

These distinctions are important because a modern practical recipe and a historical transcription serve different purposes.

The modern recipe should allow a cook to reproduce the flavour concept without pretending that its metric measurements were written in the Middle Ages.

The chemistry of the finished sauce

The sauce is a flavoured aqueous broth, not an oil emulsion.

Its texture should therefore be comparatively light.

The broth provides dissolved compounds and may contain some gelatin depending upon its preparation.

The verjuice supplies acidity.

The ginger contributes pungency, while the parsley provides herbal aroma.

A lightly acidic environment changes how flavour is perceived, helping distinguish the sauce from plain fish broth.

No flour, bread or egg is specified as a thickener in the historical sauce.

The final preparation should not resemble a modern cream sauce unless the cook has substantially modified it.

Recognizing the intended result

The fish should remain in substantial pieces.

The sauce should be pourable and relatively light.

The ginger should be noticeable but not overwhelming.

Parsley should provide a recognizable herbal element.

Verjuice should introduce tartness rather than harsh, dominating sourness.

If the broth is excessively salty, the final dish may become unbalanced. Starting with unsalted broth gives better control.

If the sauce tastes thin, the quality and flavour of the underlying fish broth may be inadequate.

If the fish remains hard, rehydration and cooking require attention.

Regional comparisons

Medieval European sauce traditions frequently used combinations of herbs, spices, souring agents and broths.

However, this specific recipe is an English manuscript preparation, not evidence of an identical sauce throughout medieval Europe.

A related recipe from the same manuscript uses walnuts and garlic instead of parsley, ginger and verjuice.

The difference is substantial: one is a light acidic herb broth, while the other is a thickened nut-and-bread sauce.

They are therefore presented separately in this collection.

Safety

Keep stockfish below 4°C while rehydrating.

Cook to the published fish safety reference of 63°C.

Neither the verjuice nor the hot broth removes the need to cook and handle the fish safely.

The recipe does not establish a safe shelf life for the finished dish.

Serve promptly after cooking.