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Mushroom Ketchup

Erken's mushroom ketchup: 2 kg unwashed mushrooms are rubbed clean with salt, ground, layered with 50 g salt in a jar for 3 days with daily stirring, cooked 1 hour in a water bath, strained without pressing, the juice mixed with whole pepper and cayenne and simmered gently 3 hours in a water bath, strained 2–3 times and bottled cold.

Source: Henriette Schønberg Erken, Stor kokebok, 1914-utg. s. 353 (falt i det fri)

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About the dish

Mushroom ketchup was an English-inspired seasoning essence used to give body and color to sauces and stews. Erken recommends mushrooms gathered on a dry day, and long steeping in salt before gentle cooking in a water bath.

How to make it

  1. 1

    Clean the mushrooms

    Do not wash the mushrooms; rub them clean with salt.

  2. 2

    Layer in salt

    Chop the mushrooms or grind them once, and layer them with the salt in a jar.

  3. 3

    Steep for three days

    Cover and set in a cool place for 3 days. Stir several times each day.

  4. 4

    First cooking in a water bath

    Pour the mixture into a pot, set this into a larger pot with boiling water and keep it boiling for 1 hour.

  5. 5

    Strain off the juice

    Strain through a clean cloth without pressing. Pour the juice back into the jar and add the pepper and cayenne.

  6. 6

    Simmer gently for three hours

    Set the jar in a pot with boiling water and let the ketchup simmer gently for 3 hours.

  7. 7

    Strain and bottle

    Strain 2–3 times through a thin piece of cloth. Pour into small bottles once the ketchup is completely cold, cork and store away.

Changes from the original

Measurements modernized (grams, knife-point of cayenne kept as "knife-point"). The method is set out in numbered steps; "boils in a water bath" is specified. The original's unclear "stir them at least 3 hours daily" is interpreted as stirring several times a day.

Time machine – what changed?

Pick two editions and see what Henriette Schønberg Erken added, removed or changed between them.

From19141949Modernised
To19141949Modernised
Modernised → 1914 (proofread, p. 353)~81% of the text changedremovedadded
2 kg sjampinjong (sanket i tørt vær, ikke vasket). kg. champignons 50 g salt. gr. salt 5 g gr. hel pepper. pepper 1 knivsodd cayennepepper. Ikke knivsod cayenne. Champignonerne maa bli indsamlet paa en tør dag; ikke vask soppen; gni den ren dem, men gnid dem rene med salt.. Hakk soppen salt. Hak dem eller kvern den én gang, og legg den lagvis med saltet mal dem 1 gang paa kvernen, læg dem i en krukke.. Dekk til krukke lagvis med saltet. Tildækkes og sett staar paa et kjølig sted i 3 døgn. Rør om flere ganger hver dag.. Hell massen dage; rør i dem mindst 3 timer daglig. Haves i en gryte, sett denne sættes igjen i en større gryte med kokende vann og hold det kokende i vand; dette holdes ikok 1 time.. Sil gjennom time. Siles gjennem et rent klede uten å presse. Hell saften klæde, pres ikke. Saften haves tilbake i krukken og tilsett pepper og cayenne.. Sett krukken, tilsæt krydderier; krukken sættes i en gryte med kokende vann vand og la ketchupen koke smått koker smaat i 3 timer.. Sil 2–3 timer. Siles 2—3 ganger gjennom gjennem et tynt tyndt stykke tøy. Hell på små flasker når ketchupen tøi; haves paa smaa flasker, naar den er helt kald, kork ganske kold; korkes og sett bort. gjemmes.

Note on Modernised

Mål modernisert (gram, knivsodd cayenne beholdt som «knivsodd»). Fremgangsmåten er satt opp i nummererte trinn; «koker i vandbad» presisert. Originalens uklare «rør i dem mindst 3 timer daglig» er tolket som omrøring flere ganger daglig.

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Frequently asked questions

Why should the mushrooms not be washed?
Water soaks into the mushrooms and dilutes the juice. Mushrooms should be gathered on a dry day and rubbed clean with salt instead.
How long does the ketchup take?
Count on around 3 days: the mushrooms lie layered with salt in a cool place for 3 days (stirred daily), then 1 hour in a water bath, straining, and finally gentle simmering with spices in a water bath for 3 hours.
What are the ingredients?
2 kg button mushrooms, 50 g salt, 5 g whole pepper and a knife-point of cayenne.
How should the ketchup be bottled and stored?
Strain the juice 2–3 times through thin cloth (do not press), fill it into small bottles only when it is completely cold, cork well and store away.

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