Word Origin & History. regimen mid-15c., act of governing, from O.Fr. regimen (14c.), from L. regimen rule, guidance, government, from regere to rule (see regal). Medical sense of course of diet, exercise, etc. for sake of health first recorded late 15c.
Soda bread. Soda bread (Irish: arÃ¡n sÃ³ide, Scots: fardel, Serbian: Äesnica / ÑÐµÑÐ½Ð¸ÑÐ°) is a variety of quick bread traditionally made in a variety of cuisines in which sodium bicarbonate (otherwise known as baking soda) is used as a leavening agent instead of the traditional yeast.
Baking soda is sodium bicarbonate and when combined with an acidic ingredient (buttermilk, lemon juice, etc.), it creates carbon dioxide gas, which expands in the heat of the oven and helps cookies, cakes, and other baked goods rise.