Over here, "shandy" is half pilsner beer, half Fanta (or any other orange-juice based soft drink). Its counterpart is "Sneeuwwitje" (Snow White), which is half pilsner beer and half Seven-Up.

In the seventies, shandy was sold in 330 ml cans; don't know if they still sell it or if anybody still drinks this stuff.

We drank it a lot, between the age of 10 and 15. It was allowed by most parents, as it was considered wiser to let the youth drink these mixtures than to forbid any alcohol at all (which would lead to secrecy and binging).