PURPOSE: Oil is combined with specific amounts of lecithin, polyglycerol ricinoleate polycondensate and/or diacetyltartaric unsaturated fatty acid monoglyceride to prevent the lecithin from precipitation for a long period of time.

CONSTITUTION: 2W30wt% of lecithin and 0.5W5wt% of glycerol rininoleate polycondensate and/or diacetyltartaric unsaturated fatty acid monoglyceride are dissolved in 97.5W65wt% of an oil such as rape oil. The resultant oil composition can keep its good condition without formation of lecithin precipitate even after long-term storage and facilitates the addition of lecithin to a variety of food products as well as oil and fat, because one can arbitrarily select either of water in oil or oil in water type emulsion, when using it.