Mary Berry's Roast Potato Secret
Mary Berry's 'best' roast potato recipe is getting fresh attention for a simple technique — she adds a key storecupboard ingredient like semolina or polenta to parboiled potatoes before roasting, yielding extra crunch and golden color. The method transforms ordinary roasted potatoes into restaurant-quality sides with minimal extra effort.
The "semolina secret" is part of a multi-step process for achieving the perfect roast potato. Mary Berry's full method specifies using floury potatoes like Maris Piper or King Edward, which are parboiled for about 8-10 minutes until the edges are soft. After draining, the potatoes are shaken in the pan or colander to "rough up" the edges, creating more surface area for crisping. The science behind the semolina is that its coarse texture absorbs moisture from the potato's surface. When it hits the hot fat, this dehydrated layer forms a distinct, shatteringly crisp crust that lasts longer than the texture achieved with regular flour. This process is a chemical browning and flavour-creating phenomenon known as the Maillard reaction. For optimal flavour and crispness, Berry recommends a combination of fats. Her recipe often calls for both goose fat and sunflower oil heated in a roasting tin until smoking hot before the potatoes are added. This ensures the potatoes begin crisping immediately upon contact with the hot fat. While Berry has popularized this method, she is not the only British cooking icon to champion semolina for roast potatoes. Nigella Lawson has described it as a "family practice, inherited through the maternal line," and Gordon Ramsay's recipe also includes the technique, solidifying its reputation among top chefs. Roast potatoes are a cornerstone of British cuisine, evolving into an iconic part of the traditional Sunday roast. This tradition itself dates back to medieval feasts, but potatoes became a staple of the meal in the 18th and 19th centuries after being introduced to the country in the late 16th century. Dame Mary Berry, born in 1935, has been a central figure in British home cooking for over five decades. After training at Le Cordon Bleu in Paris, she published her first of more than 80 cookbooks in 1970 and became a household name as a judge on "The Great British Bake Off" from 2010 to 2016. Her recipes are known for their practicality and clear instructions.
