Why it works: Chocolate and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 10,020 recipes. Both carry sotolon, which smells curry, maple. The science ↓
Double-fudge Brownies
Ingredients
Directions
Make the batter
Put the chocolate and butter into a saucepan. Cook over low heat until everything is melted and the mixture looks rich and glossy.
Remove from the heat and stir in the sugar, eggs and vanilla.
Add the flour, baking powder, salt and chocolate chips.
Bake and cool
Pour into a greased and floured 13 x 9" pan and spread evenly, making sure to either shake the pan or drop it from a low height to help break up air bubbles in the batter.
Bake for 35 minutes at 350 degrees or until the brownies begin to pull away from the sides (or it passes the "toothpick test").
Let cool completely in the pan before cutting into squares. Your yield may be more than two dozen depending on how small or large you cut the brownies.
Nutrition, whole recipe (rough)
What these numbers assume: 7 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Flour | 1 cup (125g) all-purpose | 455 |
| Chocolate | 1 oz (28g) semisweet | 155 |
| Butter | 1 tbsp (14g) | 102 |
| Egg | 1 large egg (50g) | 78 |
| Sugar | 1 tbsp (12.5g) granulated | 49 |
| Vanilla | 1 tsp extract (4ml) | 12 |
| Salt | 1 tsp (6g) | 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.
-
Chocolate + vanillatop 5% of all pairsSmell alikemoderateCooked together10,020 recipes
Shared aroma: sotolon (curry, maple).
-
Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Vanilla + flourtop 12% of all pairsSmell alikemoderateCooked together19,241 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Chocolate + sugartop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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
- Unsweetened chocolate
- Provides the deep chocolate flavor and dense, fudgy body of the brownies.
- Butter
- Adds fat for a rich, tender crumb and helps the batter set smooth and glossy.
- Eggs
- Bind the batter and set during baking to give structure and a chewy texture.
- Sugar
- Sweetens the batter and contributes to a moist, glossy crust on top.
- Flour
- Gives the batter structure so the brownies hold their shape when cut.
- Semisweet chocolate chips
- Add pockets of melted chocolate and extra sweetness throughout the brownies.
The step that matters
Bake until the edges pull away, not until fully firm. Brownies keep setting as they cool, and overbaking dries the crumb and makes them cakey. Pulling them at the edge-pulling stage keeps them fudgy.
“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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