grasu -ras- gismu

x1 is a quantity of/is made of/contains grease/fat/oil from source x2.

See also ctile, matne, plana.

In notes:

ctile
x1 is a quantity of petroleum/oil from source x2.
matne
x1 is a quantity of/contains butter/oleo/margarine/shortening from source x2.
plana
x1 is plump/fat/obese [excessively thick/bulbous/swollen] by standard x2.
rastergu'i
x1 is an oil lamp using animal or vegetable products, illuminating x2 with light x1.