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Survival Food Storage!

I recommend the LDS system, to begin.  The first step is to add a few spare, of your usual items, to your grocery shopping.  Go forward, in this way, until you will have stowed enough supplies and money, to last your family 1 month.

The next step is to increase your amount of survival food storage, to the 2 months level, then 3, and so forward, until you will have stowed enough to last 1 year.

After that, you can buy the "big 4" in bulk amounts, a 1-year supply.  Those "big 4" can stay in your keepin for as many as 30 years.  They are salt, wheat, honey or sugar, and powdered milk.  Of course, honey is more nutritious, antiseptic, and health-givin, than is sugar.