With a high sulphuric acid content, the cleaner was so strong that the accident and emergency department at the first hospital the boy attended had to be evacuated, said Michael Robinson, from the Baltimore County Fire Department.
There are other grapes grown in Savoie, too, most notably Gringet (a high-acid white said to be related to a grape from Jura, in eastern France) and Mondeuse blanche and noire (the latter is a bit like Syrah), as well as a few others that are yet more obscure.