Lemon Tart
A thin sweet pastry shell sealed with egg white, filled with a strained lemon cream and baked barely warm so it sets glassy.
- Prep
- 45m
- Cook
- 1h
- Waiting
- 5h
- Total
- 6h 45m
- Serves
- 10
- Effort
- Involved
Method
A bought all-butter sweet pastry case — you lose the thin, crisp shell but skip an hour of resting and a blind bake.
Tap a step number to mark it done. Tap an ingredient once for got it, twice for need it.
| 6 | Whisk the filling, then let it stand 30 minutes 35m Standing lets the foam collapse, so the baked surface is glassy rather than pitted. | Strain the filling into the warm case, already on the oven shelf 5m Filling a case in situ means no walking a brimming tart across the kitchen. | Bake at 140°C / 275°F for 30 minutes until the centre trembles as one 30m Low heat throughout. Above about 80°C the eggs curdle and the filling turns grainy. | Cool, then chill 3 hours until sliceable and dust with icing sugar 3h 5m Cut with a hot dry knife and wipe it between slices. | |||
| 250 g | |||||||
| 200 g | |||||||
| 3 lemons | |||||||
| 200 g | |||||||
| 250 g | Rub to crumbs, bind with the yolks, and rest 1 hour 1h 10m | Roll thin, line the tin leaving an overhang, and chill 30 minutes 40m Chilled pastry does not slump. The overhang is trimmed after baking. | Blind bake at 180°C for 20 minutes, then 10 more uncovered 32m Brush the hot pastry with egg white — it sets into a waterproof film in seconds. | ||||
| 140 g | |||||||
| 75 g | |||||||
| 2 | |||||||
| 1 tbsp | |||||||
| 1 | |||||||
-
Whisk the filling, then let it stand 30 minutes
35m- eggs 6
- caster sugar 250 g
- lemon juice 200 g
- lemon zest 3 lemons
- double cream 200 g
Standing lets the foam collapse, so the baked surface is glassy rather than pitted.
-
Rub to crumbs, bind with the yolks, and rest 1 hour
1h 10m- plain flour 250 g
- unsalted butter 140 g
- icing sugar 75 g
- egg yolks 2
- cold water 1 tbsp
-
Roll thin, line the tin leaving an overhang, and chill 30 minutes
40m- from 2 Rub to crumbs, bind with the yolks, and rest 1 hour
Chilled pastry does not slump. The overhang is trimmed after baking.
-
Blind bake at 180°C for 20 minutes, then 10 more uncovered
32m- from 3 Roll thin, line the tin leaving an overhang, and chill 30 minutes
- egg white 1
Brush the hot pastry with egg white — it sets into a waterproof film in seconds.
-
Strain the filling into the warm case, already on the oven shelf
5m- from 1 Whisk the filling, then let it stand 30 minutes
- from 4 Blind bake at 180°C for 20 minutes, then 10 more uncovered
Filling a case in situ means no walking a brimming tart across the kitchen.
-
Bake at 140°C / 275°F for 30 minutes until the centre trembles as one
30m- from 5 Strain the filling into the warm case, already on the oven shelf
Low heat throughout. Above about 80°C the eggs curdle and the filling turns grainy.
-
Cool, then chill 3 hours until sliceable and dust with icing sugar
3h 5m- from 6 Bake at 140°C / 275°F for 30 minutes until the centre trembles as one
Cut with a hot dry knife and wipe it between slices.
| 5 | Whisk and let it stand 20 minutes 25m | Strain into the case, set on a baking sheet on the oven shelf 4m | Bake at 140°C / 275°F for 30 minutes until only the centre moves 30m | Cool, then chill 3 hours before slicing 3h | |
| 200 g | |||||
| 175 g | |||||
| 2 lemons | |||||
| 175 g | |||||
| 1 x 23 cm |
-
Whisk and let it stand 20 minutes
25m- eggs 5
- caster sugar 200 g
- lemon juice 175 g
- lemon zest 2 lemons
- double cream 175 g
-
Strain into the case, set on a baking sheet on the oven shelf
4m- from 1 Whisk and let it stand 20 minutes
- ready-made sweet pastry case 1 x 23 cm
-
Bake at 140°C / 275°F for 30 minutes until only the centre moves
30m- from 2 Strain into the case, set on a baking sheet on the oven shelf
-
Cool, then chill 3 hours before slicing
3h- from 3 Bake at 140°C / 275°F for 30 minutes until only the centre moves
Setting without curdling
The filling is a custard held together by egg proteins, but lemon juice at pH 2.3 is doing half the work — acid denatures those proteins too, which is why the mixture already thickens slightly on the bench. Sugar raises the temperature at which the proteins link up, buying you a wider margin, and the cream’s fat gets between them so the set stays silky. Bake it hot and those same proteins tighten past the point of holding water, and the tart weeps.
Notes
- Rub the zest into the sugar with your fingers. The oils carry more flavour than the juice does.
- Trim the pastry overhang with a serrated knife once baked, not before.
- Chill to set, but serve at cool room temperature. Fridge-cold mutes the lemon.