Blueberry Cinnamon Rolls: Yeast Fermentation, Fruit Pectin Gelation, and Glaze Rheology

Combine warm milk ($40^\circ\text{C}$ / $105^\circ\text{F}$), yeast, and sugar in a large bowl. Let stand for 5 minutes until frothy. Whisk in melted butter, egg, and salt, then gradually fold in the flour. Knead for 6–8 minutes until smooth and elastic. Place in a greased bowl, cover, and let rise f-l-koujina (in a warm place) for 1 hour until doubled in size.

Punch down the risen dough and roll it out on a lightly floured surface into a $12 \times 18$-inch rectangle. Spread the blueberry preserves evenly across the surface, leaving a $1/2$-inch border, then sprinkle with sugar and ground cinnamon.

Tightly roll the dough log starting from the long edge. Slice into 12 uniform rolls using serrated knife or unflavored dental floss. Arrange in a greased $9 \times 13$-inch baking dish, cover loosely, and let undergo a second rise for 30 minutes until puffy.

Bake at $175^\circ\text{C}$ ($350^\circ\text{F}$) for 20 to 25 minutes until light golden-brown. Meanwhile, whisk softened cream cheese, powdered sugar, milk, and vanilla until smooth. Drizzle the glaze generously over the warm rolls so it melts into every swirl. Serve hot f-l-gass3a!