All-Purpose Flour (Best Option)
1:1 by weightAll-purpose flour has a protein content typically between 10-12%, lower than bread flour but sufficient to develop enough gluten for structure in pound cake. The gluten network formed is less elastic, which prevents toughness and keeps the crumb tender.
When substituting, measure by weight for accuracy and avoid overmixing to prevent excessive gluten development. The batter may be slightly less elastic but will still hold shape well.
The final pound cake will be slightly softer and less chewy than with bread flour but will maintain the classic dense yet tender texture expected.