To ensure your cinnamon knots turn out light and fluffy, focus on the dough’s rising process. The yeast needs to be activated properly, which means that the milk should be comfortably lukewarm, not hot or cold, as extreme temperatures can kill the yeast. After mixing your ingredients, give the dough ample time to rise in a warm environment. It should at least double in size during this first rise, which is crucial for developing the dough’s structure and flavor. Make sure to knead the dough until it’s smooth, as this helps to build the gluten structure necessary for fluffy results. Lastly, don’t rush the second rise after shaping—the knots need this additional time to expand in the muffin tin before they go into the oven.