"I cook the rice."
Translation:Hoʻomoʻa au i ka laiki.
I am not sure, but I believe that kuke is a simple verb as well as a noun, and Hoʻomoʻa is both a noun, describing one who cooks (the cook), as well as a stative verb formed from that noun. In the imperative, use the simple verb, kuke. As a verb beginning a sentence, use hoʻomoʻa or kuke. That has been working for me so far. Good luck everyone! I have not found anything in the grammar books on this.