Resource ThickenUp Clear is an innovative instant food and drink thickener designed to thicken hot and cold food or liquid to help people with swallowing difficulties. Unlike other thickeners it remains clear so does not change the look or smell of your food and drinks. It is available in both a tin and stick packs. Remains clear so does not change the look or smell of your food and drinks. Mixes quickly and easily into foods and drinks so that desired consistency can be easily obtained. ACBS approved for the management of dysphagia.