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Double Musiiroom Catsup

A sauce made by salting fresh mushrooms and mixing with ready‑made catsup.

From an old cookbook · modernised transcription
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Double Musiiroom Catsup

Ingredients

Directions

  1. Strew 3 ounces of coarse sea salt over 1 gallon of fresh mushrooms.

  2. Pour 1 quart of ready-made catsup over the salted mushrooms.

  3. Let the mixture sit to combine flavors.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Explore the science

What each ingredient does

Fresh mushrooms
Provide the bulk and earthy base; salt draws out their liquid, concentrating their flavor.
Ready-made catsup
Adds sweetness, acidity and tomato flavor that give the ketchup its character.

The step that matters

Letting the salted mushrooms sit. Salt draws water out of the mushrooms, and resting lets that liquid mix with the catsup so the flavors blend evenly rather than staying in pockets.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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