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 for Winter
Ingredients
Directions
Make the salt blend
Blend the coarse sea salt, loaf sugar, and saltpetre together.
Mix 1 ounce of this blend into 16 ounces of butter until well combined.
Pot and store
Press the mixture into glazed pots that hold 10 to 14 pounds each.
Cover the top with additional salt and water if necessary to fully cover the butter.
Store the pots in a cool, dust-free place.
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 is salted and packed, carrying the flavour of the finished preserve.
- Coarse sea salt
- Draws out moisture and slows microbial growth, helping the butter keep.
- Loaf sugar
- Adds a little sweetness that balances the saltiness of the preserved butter.
- Saltpetre
- Acts as a curing agent that inhibits bacteria and helps preserve colour.
The step that matters
Covering the butter fully with salt and water. Butter left exposed to air can oxidise and spoil, and any gap in the protective layer allows microbes to grow. Full coverage keeps air out of the butter, which is what lets it keep in a cool store.
“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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