Lentils + Onion
A proven pairing. Cooks put them together in 1,221 recipes, and they share 207 flavor molecules: the top 8% of all ingredient pairs.
Do lentils and onion go together?
Yes. 1,221 recipes in our collection combine them, and they share 207 flavor molecules. That places them in the top 8% of every ingredient pair we score.
Why they work
Almost everything lentils carries, onion has too: 207 of lentils's 230 flavor molecules also occur in onion. Among the shared key aromas are coumarin (sweet, hay) and 2-methylbutyraldehyde (malty, chocolate).
What each one brings
lentils
The floral side. Floral notes make up 12% of its labelled aroma molecules, against 8% for onion. It carries 23 molecules onion doesn't have.
onion
The sulfurous side. Sulfurous notes make up 13% of its labelled aroma molecules, against 3% for lentils. It carries 158 molecules lentils doesn't have.
Add a third ingredient
- Chard: the best fit for both, top 1% of pairs with lentils, top 7% with onion.
- Cashew nut: top 1% of pairs with lentils, top 9% with onion.
- Pasta: top 1% of pairs with lentils, top 8% with onion.
- Butternut squash: top 1% of pairs with lentils, top 8% with onion.
Ranked by the average of its two pairing scores. Only foods used in at least 100 recipes are suggested.
Recipes with lentils and onion
Almost always mains: 202 of the 226 recipes with a course label are mains.
Can you swap one for the other?
Only partly. Almost all of lentils's flavor molecules (207 of 230) are also found in onion, but onion has 158 that lentils lacks. Lentils gives you part of onion's character without most of its sulfurous side. This compares flavor only; texture, moisture and the job each does in a dish matter too.
All 207 shared molecules
See every shared molecule grouped by chemical class, with key aromas marked, plus the 23 only in lentils and the 158 only in onion.
Lentils and onion questions
Do lentils and onion go together?
A proven pairing. Cooks put them together in 1,221 recipes, and they share 207 flavor molecules: the top 8% of all ingredient pairs.
Why do lentils and onion taste good together?
Almost everything lentils carries, onion has too: 207 of lentils's 230 flavor molecules also occur in onion. Among the shared key aromas are coumarin (sweet, hay) and 2-methylbutyraldehyde (malty, chocolate).
What goes with lentils and onion?
Chard is the best third ingredient: top 1% of pairs with lentils and top 7% with onion. Cashew nut and pasta also fit both.
What can you make with lentils and onion?
Almost always mains: 202 of the 226 recipes with a course label are mains. Common dishes include Lentil and Rice Crispy Onions, Lentils with Onions and Jalapeno Chilies, Mujadarrah (lentils, onions and rice), Lentil Soup.
Can I use onion instead of lentils?
Only partly. Almost all of lentils's flavor molecules (207 of 230) are also found in onion, but onion has 158 that lentils lacks. Lentils gives you part of onion's character without most of its sulfurous side. This compares flavor only; texture, moisture and the job each does in a dish matter too.
Compare other ingredients
Ranks compare this pair with 20,000 random ingredient pairs on CompKitchen. Molecule counts are what the studies and databases we aggregate have reported for each ingredient: a measure of coverage, not a full census. How we score pairs
Cite this analysis
Compound Kitchen (2026). Compound similarity analysis: Lentils vs Onion. https://compkitchen.com/compare/lentils-vs-onion. Accessed 2026-11-04.
@misc{compkitchen_compare_compound_similarity_analysis_lentils_vs_onion_2026,
title = {Compound similarity analysis: Lentils vs Onion},
author = {{Compound Kitchen}},
year = {2026},
url = {https://compkitchen.com/compare/lentils-vs-onion},
note = {Accessed: 2026-11-04}
}
Methodology DOI: 10.5281/zenodo.19719459 · CC BY 4.0 · Citations are a request, not a requirement.