eli5: Why does pasta have such a low glycemic index if it’s made out of flour.

Question

Pasta has a glycemic index of 50 while white flour has a glycemic index of 85. What causes this massive difference? Also is glycemic index of pasta measured at Al Dente? And if so how much of a increase is expected by cooking significnatly longer then that?

In: 13

Answer 1

Pasta isn’t made from white flour, it’s made from Semolina flour.
Semolina Flour contains more protein and less starch. You also add a significant amount of water when you cook it.