Lemon meringue tart

Pastry

• 100 g sugar
• 30 g almonds
• 200 g butter, unsalted, cut in pieces, plus extra for greasing
• 340 g flour
• 1 egg
• 1 pinch salt
• 1 ½ tsp vanilla sugar, homemade
  hoặc 1 tsp natural vanilla extract

Lemon filling

• 150 g sugar
• 3 - 5 lemons, preferably organic, zest and juice
• 1 egg
• 4 egg yolks
• 100 g butter, unsalted, cut in pieces

Meringue topping

• 160 g sugar
• 4 egg whites
• 1 pinch salt