Streusel delivers flavor and provides textural contrast. In the interests of improving flavor and texture, we should focus on streusel and its basic elements. Today we began working on things. We combined equal parts butter, sugar, and rice flour. We added 0.3% salt to season the streusel. The first variable we played with was the flour. We substituted white rice flour for our go-to all-purpose flour. The raw streusel has a sandy crunch. The butter, sugar, and salt remain neutral. While the dough chills, we write. Tomorrow will reveal what that small change does to the finished result. From there, we can continue our exploration, adding flavors and playing with different types of sugar in the rice flour blend. Ideas in Food: Great Recipes and Why They Work. Maximum Flavor: Recipes That Will Change the Way You Cook. Gluten Free Flour Power: Bringing Your Favorite Foods Back to the Table.