1. Chop and sautee onion in a sauce pan with some olive oil.
2. Add 5 cups of boiling water, a pinch of pepper and salt in the pan and cook over a low fire for aproximately 10 minutes.
3. Mix corn flour with a little water and pour it into the sauce pan.
4. Simmer over a low fire for about 5 minutes while stiring the soup.

Note: Can sprinkle some grated cheese (parmesan) over each serving for some additional taste.