Soda bread versions are unleavened, but from the early 19th century bannocks have been made using baking powder, or a combination of baking soda and buttermilk or clabbered milk. Before the 19th century, bannocks were cooked on a bannock stone (Scots: stane), a large, flat, rounded piece of sandstone, placed directly onto a fire, then used as a cooking surface. Several varieties of bannock include Selkirk bannocks, beremeal bannocks, Michaelmas bannock, Yetholm bannock, and Yule bannock. The traditional soda farl is used in the full Scottish breakfast along with the potato scone (Scots: "tattie scone"). In Serbian tradition, soda bread is prepared
Kazan Soda Elektrik which is the primary source of soda ash. For this, trona ore, laying in average at a depth of under ground, is injected with hot water through bore holes drilled, and the dissolved trona is pumped up in the form of trona solution. The plant has five processing lines. The congeneration facility produces 380 MWe electric power and 400 tons of steam. The annual production capacity of the plant is 2.5 million tons of soda ash (sodium carbonate, NaCO) and 200,000 tons of baking soda (sodium bicarbonate, NaHCO). If all of the production were exported to Europe, it would increase