Australian cuisine liquid texture) or barbecue sauce are almost always included. Beetroot, pineapple and fried onions are also common additions. Other frequently-served hamburger options are bacon, fried egg and cheese. Pickles are rarely included, except in burgers from American chains. As well as national icons there are many regional iconic foods. South Australia has pasties - based on cornish pasties, fruchocs, King George Whiting, and a range of food of German origin including metwurst, beesting, kuchen streusel (German cake) and fritz. The state has its own iconic brands such as Farmers Union Iced Coffee, YoYo biscuits, Balfours Frog Cakes. Jubilee cake remains
Angel food cake scale production. Many recipes found in cookbooks advise bakers to whip the egg whites in a copper bowl. The theory behind this is that the whisk incorporates copper particles or ovotransferrin, which is attached to copper particles, into the egg whites, improving the flexibility and stability of the foam. Some research has found that the copper significantly increases the dilatational elasticity, which is the elasticity of the protein cell wall at the interface of air/water. A planetary mixer, such as a stand mixer or handheld mixer, is appropriate for a homemade or bakery cake. If the cake is being mass-produced,