Boza is Bulgaria's ancient fermented millet drink — 70 kcal per 100 g. With ~3,000 years of history, it traces back to Mesopotamia. A 250 ml glass packs ~175 kcal, more than most people expect from a "drink". The mild lactic fermentation gives it a tangy, slightly sour character.
How should I track Boza (Bulgarian fermented drink)?
Liquid calories from Boza (Bulgarian fermented drink) are easy to overlook because drinks do not trigger the same fullness signals as solid food. A meta-analysis (Wehling & Lusher, Am J Clin Nutr 2021) confirmed that people underreport beverage intake more than solid food. Most people pour 30–50% more than the label serving size without realizing it. Use a kitchen scale to weigh your glass or bottle once — you will know your exact pour going forward. This one calibration step can save you from hundreds of untracked calories per week.