The case of Donoghue vs. Stevenson that followed set a very important legal precedent: Stevenson, the manufacturer of the ginger beer, was held to have a clear duty of care towards May Donoghue, even though there was no contract between them, and, indeed, she hadn't even bought the drink.
Následující kauza Donoghue vs Stevenson ustanovila velmi důležitý právní precedens: Výrobce zázvorového piva Stevenson nesl povinnost péče vůči May Donoghue, i když mezi nimi neexistovala žádná smlouva a ona ve skutečnosti ani nekupovala ten nápoj.