Name: Glazed Sweet Potatoes and Mint Jelly
Ingredients: 8 Sweet Potatoes; ½ cup Brown Sugar; ½ lb Butter; 1 box Knox Gelatine; 2 Lemons; ½ lb Granulated Sugar; 1 bunch Mint Leaves; 1 oz Spinach Juice (optional)

Why it works: Sweet potato and spinach match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 126 recipes. Both carry 1-octen-3-ol, which smells mushroom, earthy. The science ↓

Glazed Sweet Potatoes and Mint Jelly

Ingredients

Directions

Prepare the potatoes

Wash the sweet potatoes and cook them in boiling water until soft.
Once soft, plunge them into cold water.
Cut the potatoes in half and place 8 halves on each plate.

Set out the plates

Divide the brown sugar into bowls, one for each plate.
Divide the butter into bowls, one for each plate.
Open the box of gelatine and divide it into saucers, one for each plate.
Place one lemon on each saucer.
Divide the granulated sugar into saucers, one for each plate.
Divide the mint leaves, placing one spray on each plate.
Provide a bowl of cold water for each plate.

Recipe from a historical cookbook (Internet Archive).

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.

Sweet potato + spinachtop 2% of all pairs

Smell alikestrong

Cooked together126 recipes

Shared aroma: 1-octen-3-ol (mushroom, earthy).
Lemon + minttop 4% of all pairs

Smell alikemoderate

Cooked together1,998 recipes

Shared aroma: beta-phellandrene (minty, terpene).
Lemon + spinachtop 6% of all pairs

Smell alikestrong

Cooked together1,109 recipes

Shared aroma: 1-octen-3-ol (mushroom, earthy).
Sweet potato + lemontop 10% of all pairs

Smell alikestrong

Cooked together314 recipes

Shared aroma: 2-nonenal (fatty, green).
Mint + spinachtop 11% of all pairs

Smell alikemoderate

Cooked together290 recipes

Shared aroma: 1-octen-3-ol (mushroom, earthy).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Sweet potatoes: Provide the starchy, sweet base that is cooked until soft and served in halves.
Brown sugar: Adds sweetness and molasses flavour to the glaze served with the potatoes.
Butter: Adds fat and richness, carrying flavour and giving the potatoes a smooth finish.
Knox gelatine: Sets the liquid into a jelly, giving the mint jelly its firm, wobbly texture.
Lemons: Adds acidity and brightness that balances the sweetness of the sugars.
Granulated sugar: Adds sweetness and helps the jelly set with the gelatine.

The step that matters

Cooking the sweet potatoes until soft. Cooking until fully soft lets the starches gelatinise so the flesh turns tender and creamy. Underdone potatoes stay firm and grainy, and the glaze will not coat them evenly.

Swap the spinach

The recipe marks spinach as optional. How well each one fits the dish's main ingredients (sweet potato, sugar, butter, lemon, mint):

Shallotfits about as well
Kalefits about as well
Cucumberfits about as well
Spinachthe original

Fit is the average pairing score against sweet potato, sugar, butter, lemon, mint. 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.

Sweet Potato Croquettes53 recipes

Potato Croquettes255 recipes

Lemon Sauce236 recipes

Potato Rolls78 recipes

Like knowing why a recipe works?

The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.

Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Glazed Sweet Potatoes and Mint Jelly