MAPIWhy Is My Gravy Lumpy?
Lumps are a mixing and dispersion question, not the same search problem as gravy that remains too thin.
King Arthur recommends adding stock gradually to a roux while whisking to reduce lumps, and its cornstarch gravy recipe mixes starch with cold broth until smooth before heating.
Key takeaways
- King Arthur recommends whisking stock into roux gradually to reduce lumps.
- Its cornstarch gravy recipe requires a smooth starch-and-broth mixture before heating.
- Lumps are distinct from gravy that is uniformly too thin.
What it actually means
Lumpy gravy contains visible or perceptible pockets of undispersed thickener in an otherwise flowing sauce.
The main explanation
King Arthur gives two directly documented routes to a smooth gravy: gradually add stock to the flour-and-fat roux while whisking, or make the cornstarch-and-broth mixture smooth before heating. Both address dispersion, not merely the amount of thickener.
Main causes and reasons
1. Stock was not incorporated gradually into roux
King Arthur says adding stock a little at a time and whisking produces fewer lumps.
How to recognize it
- The sauce becomes uneven while liquid is added
- The mixture shows pale flour-like pockets
Why it matters: This applies to flour-and-fat gravy.
2. Cornstarch was not smooth before heating
King Arthur instructs cooks to whisk cornstarch with broth until no lumps remain before heating.
How to recognize it
- Small pale pockets are present in the slurry
- Lumps become noticeable when the mixture heats
Why it matters: This is the starch-slurry route, not a second diagnosis of a roux.
How to identify your situation
The stock/roux mixing step deserves inspection.
Next: Use the gradual whisking approach in the source for the next batch.
The starch was not fully dispersed.
Next: Mix it smooth with broth before heating, as King Arthur directs.
This is a thickness problem, not lumps.
Next: Use the existing MAPIANCE thin-gravy article rather than treating it as clumping.
What you can do
- Determine whether the recipe uses roux or a cornstarch slurry.
- For roux, add stock gradually while whisking.
- For cornstarch gravy, mix starch smoothly with broth before heating.
- Avoid adding dry thickener directly to finished gravy as though it will disperse by itself.
Common misconceptions
Thickness and lumps are different qualities.
King Arthur emphasizes how thickener is mixed into liquid.
When it may be a bigger problem
If the gravy stays lumpy despite following the exact recipe’s mixing steps, seek recipe-specific cooking advice rather than adding more starch without diagnosis.
Frequently asked questions
Does adding stock slowly help?
Yes. King Arthur explicitly says gradual addition to roux gives fewer lumps.
Should cornstarch be dissolved first?
King Arthur mixes it with broth until smooth before heating.
Is lumpy gravy the same as thin gravy?
No. One describes uneven texture and the other overall thickness.
Should I simply add more flour?
That does not address the mixing problem King Arthur identifies.
Sources
- A deft recipe for dumplings — King Arthur BakingOfficial
- Gluten-Free Stuffing and Simple Gravy Recipe — King Arthur BakingOfficial
Written by Mapiance Editorial Team
The Mapiance Editorial Team researches, writes, reviews, and maintains practical guides and explainers for MAPIANCE.
Reviewed by Mapiance Editorial Team
Published Sep 26, 2026 · Updated Sep 26, 2026 · Verified Sep 22, 2026