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 ↓
To Preserve Butter
Ingredients
Directions
Prepare
Thoroughly cleanse the butter of buttermilk.
Mix the salt, sugar, and saltpetre together.
Cure and store
Add 1 ounce of the mixture to the butter and work it well.
Pack the butter into a pot when it becomes firm and cold.
Store the pot in a cool place, away from air.
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
- Forms the fatty base that the cure is worked into and packed down.
- Coarse sea salt
- Draws out moisture and seasons the butter, slowing spoilage.
- Loaf sugar
- Softens the sharpness of the salt and adds mild sweetness.
- Saltpetre
- Acts as a curing agent that inhibits bacterial growth and helps preserve the butter.
The step that matters
Work the cure evenly into the butter after cleansing it of buttermilk. Residual buttermilk carries milk solids and bacteria that can spoil the butter, and uneven salting leaves pockets that spoil first. Thorough cleansing and even working give the salt and curing agents a uniform distribution to preserve the whole batch.
“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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