Porridge is made out of oats and ugali is made out of corn/maize flour.
It is so inconsistant! Ten times you may say ugali in the English answer and then at once you have to say stiff poridge.
Actually, i think the closest American food to ugali is referred to as "corn meal mush". For us porridge is always a liquid-y substance and so stiff porridge is a type of oxymoron
or stiff grits :)
Ugali is not Porridge