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 ↓
A Brine to Preserve Butter
Ingredients
Directions
Prepare the butter
Work the butter into small rolls and wrap each in a clean muslin cloth, tying them with string.
Mix 2 quarts of common salt, 1 ounce of white sugar, and 1 ounce of saltpetre together.
Work the mixture into the butter, using 1 ounce of the mixture for every pound of butter.
Make the brine
Dissolve enough coarse sea salt in 3 gallons of water to float an egg.
Add ½ cup of pure white sugar and 1 tablespoon of saltpetre to the brine.
Boil the brine and strain it when cold.
Submerge and keep
Pour the brine over the butter rolls to cover them completely.
Place a weight on top to keep the butter rolls submerged.
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
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.
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
-
Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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Egg + sugartop 21% of all pairsSmell alikemoderateCooked 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
- Butter
- Forms the main body of the preserve, which the cure and brine act upon.
- Saltpetre
- Acts as a curing agent that helps preserve the butter and inhibit spoilage.
- Common salt
- Draws out moisture and slows microbial growth, aiding preservation.
- White sugar
- Adds a mild sweetness and helps balance the salt in the cure.
The step that matters
Keeping the butter fully submerged. Any butter left above the brine surface can be exposed to air and spoil, so the weight must hold every roll under the liquid.
“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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