Why it works: Apple and grape match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,659 recipes. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓
Sauerkraut
Ingredients
Directions
Prepare the barrel
Line the bottom and sides of a clean barrel or keg with cabbage leaves.
Shred the cabbage using a slaw-cutter.
Pack and salt
Pack a layer of cabbage about 4 inches deep, pressing down firmly and sprinkling with salt.
Optionally, add chopped apples or grapes between layers.
Continue layering and pressing down until all cabbage is packed.
Weight and ferment
Cover with cabbage leaves, a clean cloth, a board, and a heavy stone for weight.
Store in a cool cellar to ferment for two weeks.
Weekly, check for scum, clean the cloth, board, and stone, and replace them.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Apple + grapetop 1% of all pairsSmell alikestrongCooked together1,659 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
-
Cabbage + appletop 12% of all pairsSmell alikemoderateCooked together235 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Cabbage + grapetop 17% of all pairsSmell alikemoderateCooked together89 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- White cabbage
- Provides the bulk of the vegetable that ferments into sauerkraut.
- Coarse sea salt
- Draws moisture out of the cabbage and inhibits spoilage microbes, letting lactic fermentation dominate.
The step that matters
Pack the cabbage firmly and keep it fully under brine. Pressing each layer and keeping the cabbage submerged in its own liquid excludes air, which prevents mould and spoilage while lactic acid bacteria ferment the sugars and produce the sour flavour.
“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.
More sauerkraut recipes
You might also like
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.

Cabbage Dressing9 recipes
Chicken Salad623 recipes
Salad Dressing491 recipes
Tomato Salad179 recipes