Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Alton Brown's Sweet Potato Waffles
Ingredients
Directions
Prepare the sweet potatoes
Put cubed sweet potatoes in a steamer basket.
Place the basket in a large pot of simmering water that is no closer than 2 inches from the bottom of the steamer.
Allow potatoes to steam for 20 minutes or until fork tender.
Mash cooked potatoes and set aside.
Make the batter
In a large bowl, whisk together flour, baking powder, and salt and set aside.
In another bowl combine the sweet potatoes, milk, brown sugar, butter, and grated orange rind.
Stir the sweet potato mixture into the flour mixture and thoroughly combine.
Beat egg whites until stiff peaks form.
Gradually fold egg whites into batter ⅓ at a time.
Cook the waffles
Using a no.20 disher (scoop), place 2 scoops of batter onto a preheated, oiled waffle iron, and cook until lightly browned, about 5 to 6 minutes.
Nutrition, whole recipe (rough)
Counts 9 of 10 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.
What these numbers assume: 9 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Flour | 1 cup (125g) all-purpose | 455 |
| Potato | 1 medium (173g) baked | 161 |
| Milk | 1 cup (244ml) whole | 149 |
| Vegetable | 1 tbsp (14g) | 120 |
| Butter | 1 tbsp (14g) | 102 |
| Egg | 1 large egg (50g) | 78 |
| Orange | 1 medium (131g) | 62 |
| Sugar | 1 tbsp (12.5g) granulated | 49 |
| Salt | 1 tsp (6g) | 0 |
| Waffle | 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.
Steps grouped into stages for easier reading; the method is the source's own.
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.
-
Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Sweet potato + orangetop 9% of all pairsSmell alikemoderateCooked together191 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
-
Sweet potato + flourtop 9% of all pairsSmell alikemoderateCooked together627 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sweet potatoes
- Provide moisture, body and natural sweetness to the batter.
- Egg whites
- Whipped to stiff peaks, they lighten the batter and help the waffles rise and set.
- All purpose flour
- Forms the structure that holds the waffles together as they cook.
- Baking powder
- Releases gas in the batter, creating lift and a lighter crumb.
- Butter
- Adds fat for tenderness and rich flavor, and helps browning.
- Light brown sugar
- Adds sweetness and molasses flavor, and promotes browning on the waffle surface.
The step that matters
Folding in the egg whites. Whipped whites hold air that gives lift. Adding them all at once or stirring vigorously knocks out that air, leaving dense waffles. Fold gently, in portions.
Swap the orange
How well each one fits the dish's main ingredients (sweet potato, flour, egg, milk, sugar, butter):
- Vanillafits better
- Raisinfits better
- Coconutfits better
- Orangethe original
Fit is the average pairing score against sweet potato, flour, egg, milk, sugar, butter. Candidates are from the same food group and used in at least 100 recipes.
“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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