Cohesiveness is a critical property in hydrocolloid-based formulations for food and health applications, particularly in dysphagia management, where bolus integrity influences swallowing safety and comfort. Traditional assessments using the capillary breakup extensional rheometer (CaBER) have provided insights into fluid cohesion, but its limited control over deformation rate constrains physiological relevance. This work introduces filament stretching extensional rheometry (FiSER) as a complementary approach for characterizing extensional properties of hydrocolloid solutions and blends. FiSER experiments were conducted under constant top plate velocity, enabling controlled filament stretching and generating kinematic data that capture rate-dependent behavior. Measurements on selected hydrocolloid blends are interpreted alongside CaBER findings from the literature, revealing conceptual consistency while demonstrating FiSER’s superior reproducibility and sensitivity to formulation differences. By linking extensional response to cohesive strength, these results underscore FiSER’s potential for guiding hydrocolloid design strategies aimed at improving bolus cohesion and swallowing safety in dysphagia-oriented applications.