Gastric emptying sequence into the duodenum
Food rich in carbohydrate leaves the stomach in a few hours. Protein-rich foods leave more slowly and emptying is slowest after a meal containing fat. 
Hyperosmotic contents in duodenum decrease gastric emptying. 
CCK is also an inhibitor of gastric emptying
Fat > protein > carbohydrate
Fat < carbohydrate < protein
Protein < fat < carbohydrate
Protein > fat > carbohydrate