As parents weather this crisis, they might find themselves faced with the kind of advice I got when I gave birth in the first days of the pandemic and there were no stores open or deliveries: if you need formula, the nurse said, do what they used to do, and make your own. Thankfully, I didn"t have to hunt down evaporated milk and fumble with fractions of an ounce, only to come up with a potentially dangerous concoction. But it was a reminder that our current setup is a recent one, after all.