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Preserve

Care of Butter

A method for preserving butter by submerging it in a saltpetre and sugar brine.

From an old cookbook · modernised transcription
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Why it works: Butter and egg are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 118,967 recipes. Both carry decanal, which smells soap, orange peel. The science ↓

Care of Butter

Ingredients

Directions

Prepare the butter

  1. Work butter until solid and make into rolls.

  2. Take two gallons water, one pint white sugar, one level tablespoon saltpetre; make the brine strong enough with salt to bear an egg.

  3. Boil the brine and skim.

  4. Let the brine cool.

  5. Pour the cooled brine over the butter rolls.

  6. Keep the butter under the brine with a weight.

Treat rancid butter

  1. Render beef suet at a very low temperature.

  2. Churn the suet in fresh buttermilk with egg yolks.

  3. Treat the resulting mixture like butter when removed.

  4. Put fifteen drops chloride of lime into a pint of cold water.

  5. Work the rancid butter in the lime water until every particle contacts the water.

  6. Work the butter over in pure cold water.

Brine and store

  1. To three gallons of brine strong enough to bear an egg, add a quarter pound of nice white sugar and one tablespoon of saltpeter.

  2. Boil the brine.

  3. When the brine is cold, strain it carefully.

  4. Make the butter into rolls.

  5. Wrap each roll separately in a clean white muslin cloth, tying up with a string.

  6. Pack a large jar full, weight the butter down, and pour over the brine until all is submerged.

  7. This brine will keep the butter sweet and fresh for a year.

  8. Be careful not to put butter on ice if you wish to keep it for any length of time.

  9. In summer, when heat will not allow butter to be made into rolls, pack loosely in small jars, and using the same brine, allow it to cover the butter to a depth of at least four inches.

Nutrition, whole recipe (rough)

229Calories
6 gProtein
17 gFat
13 gCarbs

Counts 4 of 5 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.

What these numbers assume: 4 portions
IngredientPortion assumedkcal
Butter1 tbsp (14g)102
Egg1 large egg (50g)78
Sugar1 tbsp (12.5g) granulated49
Salt1 tsp (6g)0
Waternot in our table0

One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.

By Sterrett, Laura C. 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. See the original page.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  2. Sugar + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Sugar + eggtop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

    Shared aroma: 2-nonenal (fatty, green).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Salt
Preserves the butter by drawing out moisture and inhibiting microbial growth in the brine.
Saltpeter
Helps keep the butter's colour and inhibits spoilage bacteria in the brine.
White sugar
Adds sweetness to the brine and helps balance its saltiness.
Butter
The fat being preserved; its surface is kept fully submerged in the brine.

The step that matters

Keep the butter fully submerged in the brine. Any butter exposed to air can oxidise and spoil, so weighting it down and covering it completely with cold brine protects it from air and microbes.

“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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