If you don’t live in Pennsylvania, this is going to sound a little weird: When I go to the beer store (a state oddity), I have to buy at least a case of beer.

It’s not because of my terrible thirst; it’s the law. We call it the case law, and it’s been in place for more than 70 years, since shortly after the repeal of Prohibition. You can’t go to the store and buy six-packs, 12-packs, or single bottles.

We can buy six-packs at licensed premises, like bars and ­restaurants — if they offer the service. Not all of them do, although some people buy a bar license and sell only six-packs, an interesting end run around the law. But there’s a catch there too. You can’t buy more than two six-packs at a time — though if you step out the door, you can step back in and buy two more.