The Vanilla Slice, affectionately known as a 'Snot Block' in Australian slang, is an iconic Australian dessert that consists of thick vanilla custard sandwiched between two layers of crispy puff pastry, topped with a distinctive white icing or a dusting of icing sugar.

This beloved treat has been a staple in Australian bakeries since the mid-20th century, though its origins can be traced back to similar European desserts like the French Mille-feuille. It gained particular popularity in rural bakeries and has become a source of fierce competition at country shows and bakery awards.

Creating the perfect Vanilla Slice is considered something of an art form in Australia. The custard must be firm enough to hold its shape when cut but still creamy and smooth when eaten. The pastry should be crisp and flaky, providing a satisfying contrast to the silky custard. The icing on top is typically white and sometimes features feathered patterns made with passionfruit icing.

While the traditional recipe remains popular, modern variations have emerged. Some bakers experiment with different flavored custards, such as passionfruit, coffee, or chocolate. Others might add layers of fresh fruit or jam between the custard and pastry, though purists might argue this detracts from the dessert's classic appeal.

In Australian bakeries, the Vanilla Slice is typically served as a generous square portion, often wrapped in paper or presented on a small plate. It's a popular choice for morning or afternoon tea and is frequently featured at bake sales and community events. Some enthusiasts even embark on 'Vanilla Slice trails', touring regional bakeries to find the best version.

From a nutritional perspective, the Vanilla Slice is undeniably an indulgent treat. A standard serving can contain upwards of 400 calories, primarily from the butter-rich pastry and custard. Those with gluten sensitivities should note that traditional puff pastry contains wheat flour, though some bakeries now offer gluten-free alternatives. The high dairy content also makes this dessert unsuitable for those who are lactose intolerant or following a vegan diet, unless specifically made with alternative ingredients.