Why it works: Pepper and vinegar are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 27,814 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Sweet Potatoes Boiled
Ingredients
Directions
Prepare
Split any very large and thick sweet potatoes in half and cut them into four pieces so they cook evenly.
Boil
Boil the sweet potatoes with skins on in plenty of water, without adding salt.
Set the pot on coals in the corner if desired.
Test the potatoes with a fork to ensure they are cooked through; they should take at least an hour.
Dry and serve
Drain the water and set the sweet potatoes for a few minutes in a tin pan before the fire or in the stove to dry them.
Peel the sweet potatoes before serving.
If the sweet potatoes are very large and all of a size, you may roast them.
Nutrition, whole recipe (rough)
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
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Butter | 1 tbsp (14g) | 102 |
| Black Pepper | 1 tsp ground (2.3g) | 6 |
| Vinegar | 1 tbsp (15ml) distilled | 3 |
| Salt | 1 tsp (6g) | 0 |
| Water | not in our table | 0 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
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.
-
Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Butter + vinegartop 23% of all pairsSmell alikemoderateCooked together13,513 recipes
Shared aroma: isoamyl acetate (banana, pear).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sweet potatoes (in the method)
- Main ingredient; boiling with skins on cooks the starch until the flesh turns soft and tender.
The step that matters
Testing with a fork. Potatoes are done when a fork slides through the centre easily. Starch in the flesh softens gradually as it heats, so undercooked potatoes stay firm and chalky inside. Test the thickest pieces, since they take longest to cook through.
“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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