I am not Yemenite and bought frozen Jachnun. The package says to cook for 8 hours. Most recipes online talk about cooking it overnight. My question is then - isn't turning raw dough into cooked dough ...
The most widely held practice regarding heating up liquids on Shabbat is that it is prohibited, though there are differences of practice between Ashkenazim and Sephardim regarding sauces and such ...