Bertinet Bakery launches fresher-for-longer all-natural sourdough range Bertinet Bakery has launched a ‘category-first’ artisan sliced sourdough, which it claims has a softer ‘sandwich friendly’ texture that stays fresher for longer without additives or shelf life preservatives. According to the brand, its new formulation opens up the nutritional, gut-friendly and authentic foodie credentials of sourdough to the everyday mainstream bread consumer. The sourdough is made with just flour, water and sea salt, but uses revolutionary new baking methods to extend its shelf life. Bertinet Bakery’s new sourdough range is rolling out across the UK in Waitrose, Ocado and Milk & More, initially with a Seeded Sliced Sourdough in 1.1kg (£3.95) and 550g (£2.25) loaves and followed by White and Malted Wheat variants in both 1kg (£3.50) and 500g (£1.95) formats.