My daughter in law had a gastric by pass 2 years ago and she had to have her food measured in teaspoons. So many teaspoons per hour of food and liquid. Everything had to be liquid for every s o long after the surgery - all meat, etc was liquidized in the blender then she got a teaspoon. It was very regimented and she followed it exactly. Still, she had complications to the surgery and now is scheduled to have most of her colon removed next month. Her body did not react to the by pass as expected. some things are tragic.