jalna gismu

x1 is a quantity of/contains/is made of starch from source x2 of composition including x3.

See also patlu, samcu.


In notes:

patlu
x1 is a potato [an edible tuber] of variety/cultivar x2.
samcu
x1 is a quantity of cassava/taro/manioc/tapioca/yam [edible starchy root] of species/strain x2.