Why gold?
Because 9mm ammo runs about 11 pounds per $100, or a little under 5 and a half tons per $100,000.
$100,000 worth of food is going to be very heavy, spoil long before you can use it, and take up a lot of room.
$100,000 worth of gold weighs about as much as a half gallon of milk.
The first few to several thousand should go to food, ammo, and other necessities. After that, if you want to preserve wealth, food and ammo are just dead weight.
$100,000 worth of gold weighs about as much as a half gallon of milk.