Knead 150 g flour, 1 pinch of salt, 1 tablespoon of sugar, 5-6 tablespoons of cold water and 100 g butter in pieces. Chill for 30 minutes
Roll out dough on flour. Cut out 6 circles (each 15 cm Ø). Line 6 greased tartlet moulds (12 cm Ø) with them. Cover with baking paper and pulses. Bake in the preheated oven (electric cooker: 225 °C/circulating air: 200 °C/gas: level 4) for 10-15 minutes. Remove the pulses and paper, continue baking for 5 minutes
Wash and dry untreated limes, grate the peel. Squeeze all limes. Fill up juice to 1 teaspoon to 1/2 l with water. Bring to the boil with lime zest, 150 g sugar and 1 tablespoon butter. Mix starch and 6 tbsp. water, thicken juice
Separate eggs. Mix the egg yolks and 2 tbsp. hot cream, stir into the rest of the cream. Pour into the tartlets, chill for 30 minutes
Beat the egg whites and 1 teaspoon lime juice until stiff, pour in 100 g sugar. Spread over the cream. In the oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3)
Bake for 5-10 minutes. Let it cool down. Dust with icing sugar