Custards, creams & meringues
French meringue
Meringue française · A foam of whipped egg whites with mechanically incorporated sugar, neither cooked nor stabilized with heat. The most elementary and versatile of the three classical meringues. Because the proteins are not coagulated by heat during formation, it is typically used in baked applications where the oven completes the structure, or folded into batters and doughs.
The formula
100 g egg white : 60–100 g caster sugar
The ratio governs texture. 60 g sugar yields a soft, billowy foam for folding into batter; 100 g sugar yields a stiff, dry meringue suitable for piping and baking. All sugar dissolves in the liquid phase of the beaten whites; no heat is used to stabilize the foam.
Identity
- Two ingredients only: egg whites and refined white sugar — nothing else is essential
- Egg whites are beaten to a target stage (soft, firm, or stiff peak) before any sugar is added, then the sugar is incorporated gradually
- Not heated during preparation; the proteins remain uncoagulated and the structure depends entirely on mechanical foam formation
- Baked low and slow (90–110 °C) to desiccate, not to brown
- Sugar must be fully dissolved before baking or it will weep upon cooling
Ingredients
| Base | Egg whites, large, room temperature (≈30–33 g each) | Protein source for the foam. Older eggs whip faster but are more prone to overbeating; very fresh eggs produce a tighter, more reluctant foam. |
| Sweetener | Caster (superfine) sugar | Dissolves in the egg white liquid, adding body, sweetness, and preventing the foam from collapsing. Granulated sugar works but dissolves more slowly. |
| Acid | Cream of tartar (optional, ¼ tsp per 100 g whites) | Food-grade acid that lowers pH, stabilizes the foam by strengthening the protein network, and helps the whites reach volume faster. A widely used but not strictly classical addition. |
Method
- 1Separate eggs cleanly; ensure whites are at room temperature (20–22 °C) and free of any yolk, fat, or residue.Fat (even a trace of yolk) denatures the proteins and prevents the foam from forming. Cold whites are denser and whip more slowly; room temperature whites whip to greater volume.
- 2Whisk the egg whites on medium speed, gradually increasing to medium-high, until they reach soft peak — the whites cling to the whisk and curl over, but the bowl can be tilted.At soft peak, the protein films are partially denatured and aligned around air cells. Adding sugar too early (before any foam is established) dilutes the protein concentration and reduces total volume.
- 3With the mixer running, add the caster sugar in a slow, steady stream. If using cream of tartar, add it at the start of whisking.Gradual incorporation allows each increment of sugar to dissolve fully in the liquid phase before the next is added. Rapid addition causes the sugar to clump and remain undissolved, which later manifests as grit or weeping.
- 4Continue whisking to the desired stage — firm peak (bowl can be inverted without the foam falling, but the peak bends over) for folding into batter, or stiff peak (rigid, vertical points with no flex) for piping and dry applications.The degree of protein alignment and foam density determines the final texture. Overbeating past stiff peak collapses the foam as the proteins over-coagulate under mechanical stress.
- 5Use immediately, or transfer to a piping bag. If baking, spread or pipe onto parchment-lined sheets and bake at 90–100 °C until dry and lifts cleanly from the paper (1–2 hours for sheets, longer for thick pavlova bases).Low-temperature baking removes moisture without browning the proteins. The meringue sets by desiccation and protein coagulation at the surface, not by caramelization.
Techniques that matter
Foam formation (protein film mechanics)
Egg white proteins (mainly ovalbumin, conalbumin, and ovomucoid) unfold at the air-water interface of the incorporated bubbles and form a viscoelastic film. Mechanical whisking drives air incorporation; the proteins' amphiphilic nature allows them to stabilize the interface.
Sugar dissolution and weeping prevention
Sugar added after foam formation dissolves in the remaining liquid between air cells, increasing viscosity and preventing bubble coalescence. If not fully dissolved, the sugar recrystallizes during baking, drawing liquid out (weeping).
Overrun control
The volume increase (overrun) depends on whip time, speed, and sugar timing. Adding sugar earlier yields a denser, more stable foam with less overrun; later sugar yields a lighter, more fragile foam with higher overrun.
Variations & derivatives
Coconut meringueFrance / Pacific
Add 30 g toasted desiccated coconut per 100 g meringue after the stiff peak stage. Used as a topping for coconut cream pie.
Pavlova baseAustralia / New Zealand
A thick, soft-peak meringue shaped into a disc and baked low (100 °C, 90 minutes) to form a crisp shell with a marshmallow interior. Typically flavored with vinegar and cornstarch.
Genoise-leavened meringueFrance
Fold a small quantity of French meringue into a genoise batter (≈25 % of the total batter) to add lift and create a particularly tender crumb, as in fraisier cake layers.
Used in these dishes
Substitutions
- Caster (superfine) sugar → Powdered (icing) sugar — Powdered sugar contains 3–5 % cornstarch, which can slightly dull the foam's shine but does not prevent formation. Use in equal weight.
- Egg whites → Commercially pasteurized liquid egg white — Pasteurized whites are safe raw and whip identically. Ensure the product is 100 % whites, no additives. Useful for avoiding any food-safety concern when the meringue is not baked.
- Egg whites → Aquafaba — The brine from canned chickpeas can be whipped to a foam with sugar. Yields a lighter, less stable foam with a faint legume flavor. Not a classical substitution but functional for vegan applications.changes result
Troubleshooting
Meringue weeps (liquid beads on the surface after baking)
Sugar not fully dissolved before baking, or oven temperature too high causing steam to condense inside the structure → Ensure all sugar is incorporated and dissolved before using or baking. Bake at 90–100 °C, not above 120 °C. Cool gradually in the oven with the door ajar.
Foam will not reach stiff peaks; remains flat and liquid
Fat contamination (yolk residue, greasy bowl, or non-plastic utensil), or eggs too old with degraded proteins → Use a scrupulously clean glass or stainless bowl. Wipe with a halved lemon or white vinegar, then dry. Ensure no yolk breached the whites. Use room-temperature, clean whites.
Meringue is grainy or has wet spots after baking
Sugar incompletely dissolved; sugar crystals did not fully integrate → Use caster (superfine) sugar, not granulated. If grain persists, grind granulated briefly in a spice grinder. Always add sugar gradually, never all at once.
Collapse or excessive shrinkage after baking
Humidity in the oven or during cooling; underbaked interior still contains moisture → Bake longer at the lowest temperature until the meringue lifts cleanly from the paper. If humidity is high, reduce the oven temperature and extend time, or use a dehydrator at 60–70 °C.