Tapai (ta-pie) or tape (ta-peh), is a traditional fermented food found throughout much of East- and Southeast Asia. It's a sweet or sour alcoholic paste.
I bought it in an Indonesian cultural event and apparently after 2 weeks, it was still sitting silently in the fridge!
So my husband suggested me to make a cake from the fermented cassava. But I found a better recipe, the one that combines fermented cassava and cheddar cheese.