You could invest them to produce an income or you could just eat into the capital every year to help make up any difference between income and expenditure.
Teach a girl that a fish is not a cow before showing her how you would catch it, rather than forcing her to eatthe fish with a side of steak in an attempt to demonstrate thedifference.
Entirely the contrary in fact, true food security means gaining food from many different geographic areas so that a failure of the crops in any one of them makes only a marginal difference to your ability to eat.