After 20 or 30 minutes, when the pumpkin is soft but still too firm to eat, add the corn, beans and chilies.

Return the duck to the pot and add the boiling water, chilies and pepper.

As soon as seeds begin to pop, a matter of seconds, add red chilies.

Add the garlic and chilies and cook about 30 seconds, stirring.

Bring a small pan of water to a boil, and add chilies.

Add the onion, garlic and chilies and cook until soft (about five minutes).

A minute later, add fish and chilies and cook, undisturbed, for about 2 minutes.

Add ginger and chilies and cook, stirring for 30 seconds.

Add chilies, fish sauce and lime juice to soup.

Place in a large bowl, add chilies, garlic, cumin, salt and pepper.