Lemon Tiramisu

Ingredients

• 95-100 g (3) egg whites
• 1 x 85 g original lemon
• 1 cup (250 mL) boiling water
• 300 mL thickened cream
• 1 x 250 g tub mascarpone
• 2 tsp (10 mL) vanilla extract
• ⅓ cup (80 mL) cold water
• 1 cup (250 mL) cold water
• 1 x 400 g packet thin savoiardi biscuits