All-Purpose Flour (Best Option)
1:1 by weightAll-purpose flour has a moderate protein content (around 10-12%) which is close to bread flour’s higher protein level (12-14%). This protein content allows gluten formation, providing enough structure for the ladyfingers or sponge layers in tiramisu to hold their shape when soaked. The gluten network traps air during baking, producing a light but resilient crumb.
When substituting, ensure the batter is not overmixed to avoid toughness. Watch the soaking time carefully to prevent oversaturation, as all-purpose flour-based sponges may absorb liquids slightly faster.
The final tiramisu will have a slightly softer texture compared to bread flour but will still maintain the essential balance between firmness and tenderness, preserving the traditional mouthfeel.