Provided is an oil-in-water type composition which can provide a chewy texture both in a non-cooked state and a heated state and does not show water/oil separation. More specifically, provided is an oil-in-water type composition comprising an alkyl cellulose, a 1% by mass aqueous solution of which has a viscosity at 20°C of from 4,000 to 11,000 mPa·s when measured with a Brookfield type viscometer and a 1.5% by mass aqueous solution of which has a storage modulus G(65°C) at 65°C of from 2,500 to 4,500 Pa an edible oil or fat and water. Also provided is a food using the alkyl cellulose.