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A Surplus of Supplies

In the area where I am currently located, the only thing I have access to, in ways of japanese food supplies is bulk bulk and more bulk...
While i have no problem when this is rice and soba noodles ^.^
Someone recently bought me 2 pounds (907 grams) of tahini which i have no idea what to do with considering i'm a non-native bentoist.
So i would love if anyone could post any ideas so I don't waste perfectly good food.