For food safety, you can use pasteurized eggs or heat the egg yolk mixture to 160°F (71°C) while whisking constantly.
Substitute brandy with Marsala wine or rum for a different flavor profile.
Store leftovers in the refrigerator for up to 3 days. The ladyfingers may become softer over time.
For a stronger coffee flavor, use cooled strong brewed coffee instead of the water/coffee granule mixture.