A half cup in the entire recipe that serves 8, is 1/16 of a cup per serving. A sixteenth of a cup is less than 2 tablespoons, so I don't think that's a lot. I'm really not sure about the glycemic index of cornstarch, so I probably shouldn't have said it's the same as flour. I don't like the way cornstarch thickens, so I rarely use it.

When I first started South Beach many years ago, and was very careful about everything I put in my mouth, I substituted chick pea flour for wheat flour with good results in gravies, and in dredging chicken to pan fry.

Remember, South Beach isn't about the amount of carbs in something, it's about the glycemic index.