Why it works: Butter and sugar are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 98,233 recipes. Both carry guaiacol, which smells smoky, sweet. The science ↓
A Brine to Preserve Butter
Ingredients
Directions
Prepare
Work the butter into small rolls and wrap each in a clean muslin cloth, tying them with string.
Prepare a brine with 3 gallons of water, adding enough salt to float an egg.
Stir in ½ cup of sugar and 1 tablespoon of saltpetre, then boil the brine.
Once cooled, strain the brine carefully.
Brine and weigh
Pour the brine over the butter rolls to cover them completely, excluding air.
Place a weight on top to keep the 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 + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Is the fat being preserved, so it is the food the brine protects.
- Coarse sea salt
- Draws water out of the butter and slows bacterial growth.
- Saltpetre
- Acts as a curing agent that helps inhibit spoilage bacteria.
- Sugar
- Adds mild sweetness and helps balance the sharpness of the salt.
The step that matters
Keeping the rolls fully submerged. Any butter exposed to air can oxidise and spoil, and the brine only protects what it covers. Pouring the brine over the rolls to cover them completely and weighing them down keeps every surface sealed off from air.
“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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