frugal

Of something which is consumed (such as money, goods, etc.): Careful or wise in expenditure; avoiding waste.

frugal advice

By what a frugal man annually saves, he not only affords maintenance to an additional number of productive hands, for that or the ensuing year, but [also] establishes as it were a perpetual fund for the maintenance of an equal number in all times to come.

Of something which is supplied or used (especially food): Obtained by or characterized by frugality.

frugal fortune; frugal fare

frugal breakfast