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.
Kasus Donoghue vs. Stevenson kemudian menjadi preseden legal penting: Stevenson, produsen bir jahe, diputuskan wajib bertanggung jawab terhadap May Donoghue, walau tidak ada kontrak di antara mereka, dia bahkan tidak membeli minuman itu.