I love to cook my pasta al dente, which basically means underdone. When you boil pasta for 5 minutes, it’s glycemic index is 38. After boiling for 20 minutes, it shoots up to 61. What does this mean in real terms? The higher the glycemic index, the sooner you will be hungry again. Because it will be like eating something very sweet. You’ll get a quick energy spike, followed by a crash, and you’ll be looking in the fridge for a snack. So basically, you should cook your pasta al dente (or a little underdone) and you’ll feel satisfied with less food.