Best Tiramisu Recipe – Easy, Make-Ahead & Restaurant-Worthy

Ingredients

• 2 cups boiling water
• 3 tablespoons instant espresso powder/granules
• ½ cup dark rum, (divided)
• 6 large egg yolks, (at room temperature)
• ¼ teaspoon salt
• 1 cup sugar, (divided)
• 1½ lb (three 8 oz containers) mascarpone cheese, (cold (see note))
• 1½ teaspoons vanilla extract
• 1 cup heavy whipping cream, (cold)
• 2 tablespoons unsweetened cocoa powder
• 14 oz Savoiardi biscuits or crisp ladyfingers (see note)