Instant Food Thickener Make almost any hot or cold food or beverage thicker without altering the taste. Resource® ThickenUp® is an instant food and beverage thickener for people with swallowing problems . Count on Resource® ThickenUp® to give shape and body to any meal. This instant food and beverage thickener uses 100% modified cornstarch to thicken quickly without lumping, and maintains its consistency over time. Swallowing problems should always be diagnosed by a healthcare professional trained in diagnosing Dysphagia. Nestl Nutrition recommends consulting a speech language pathologist or other qualified swallowing therapist for evaluation of any swallowing difficulties and recommendation of suitable products.