Questions & Answers about Ég elda súpu í stórum potti á eldavélinni.
Súpa is the nominative form (dictionary form) of the noun súpa “soup”.
In this sentence, súpu is the direct object of the verb elda “to cook”, so it must be in the accusative case.
- Nominative (subject): súpa – Súpan er heit. “The soup is hot.”
- Accusative (direct object): súpu – Ég elda súpu. “I cook soup.”
So:
- Ég – nominative (subject)
- elda – verb
- súpu – accusative (object)
That’s why you don’t use súpa here.