All-Purpose Flour (Best Option)
1 tablespoon per 1 cup of sauceAll-purpose flour contains moderate protein and starch levels, which help stabilize the emulsion in Hollandaise Sauce by gently thickening it without adding heaviness. The starch granules swell during gentle heating, providing body and preventing separation.
To ensure success, whisk the flour into melted butter or warm liquid before combining with egg yolks to avoid lumps. Cook gently to activate the starch without curdling the eggs.
Compared to bread flour, all-purpose flour yields a slightly less elastic texture but preserves the sauce's characteristic smoothness and richness, making it an ideal substitute.