Muffin
A chemically leavened quick bread mixed by combining wet and dry ingredients only until just moistened, because further mixing is visibly punished.
Also called American muffin (UK) — Distinguishes it from the English muffin, a yeasted griddle bread that is an unrelated product.
The muffin exists on this site mainly because it demonstrates the muffin method — combine dry ingredients, combine wet ingredients, then fold the two together until only just moistened — and because the penalty for ignoring it is unusually legible.
A muffin batter has enough liquid and enough flour to develop gluten readily. Mixing past the point of moistening does exactly that, and the developed network holds the gas from the chemical leavener in large, elongated channels instead of small dispersed cells. Those channels are visible in the cut muffin as tunnels running up from the base, alongside a peaked rather than domed top and a tough texture.
It is one of the few faults in baking where the cause can be read directly off the cross-section.
What it should be like
- Crumb texture
- Even and open, with no vertical tunnelling
- Volume
- A rounded dome rather than a sharp peak
- Tenderness
- Tender and slightly coarse, not chewy
A lumpy batter is the correct batter
The instinct to mix until smooth is the fault. A correctly mixed muffin batter looks underdone — lumpy, with streaks of dry flour barely incorporated — and it is finished at that point.
The remaining dry patches hydrate during the rest before baking and during the bake itself. Mixing them away costs more in gluten development than it gains in evenness.
Related
Part of
Chemically leavened and set by egg and starch, though mixed by a method that deliberately avoids the creaming stage.
Characteristic ingredients
A complete leavening system is used because a muffin batter has no reliable acid of its own.
Things that go wrong
Muffins reach it by a distinctive route — overmixing produces tunnels and a peaked top alongside the collapse.
Muffins came out dense, tunnelled or peaked
The product the method is named after.
Over-baking a small cake is quick and the crumb shows it immediately.
The cake is raw, wet or gummy in the middle
Deep paper cases behave like small loaf tins, which is the geometry the model is about.
The cake domed and cracked on top
A peaked, cracked muffin top is the same mechanism and is often wanted rather than a fault.
A tray of twelve is the best diagnostic BakeHQ has for mapping an oven.
What this product needs done
Aeration
Chemically leavened and barely mixed, so the gas has to come from the leavener rather than from any developed structure.
Structure building
Egg protein and gelatinised starch set the crumb. Gluten is actively unwanted here, which is why overmixing produces tunnels.
Gas retention
A muffin batter is viscous enough to hold its own gas, which is why it needs no gluten network to do it.
Gluten inhibition
The reason the method is 'mix until just combined'. The requirement is for gluten NOT to develop.
Hydration
A muffin batter is poured, so it needs enough liquid to pour. Milk and egg usually supply all of it between them.
Techniques this product depends on
The muffin method is defined by how little the batter is worked. Overmixing develops gluten that a muffin does not want, which is the tunnelling fault.
Compared in
One side of the comparison, so the comparison is reachable from the record a reader is more likely to land on first.
Covered in
The cake families, sorted by how the air gets in
Chemically leavened and barely mixed, and the archetype for the oil-based family’s failure modes.