Question

Koumiss has been traditionally prepared from which milk?

• A. Ewe's milk
• B. Mare's milk
• C. Cow's milk
• D. Camel's milk

Hint:

Remember the unique raw materials of traditional fermented milks:
- Koumiss: Mare's milk (high lactose, leading to significant alcohol production).
- Kefir: Cow, sheep, or goat milk (using kefir grains).

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Koumiss is a traditional, ancient fermented dairy beverage native to the steppes of Central Asia.
Unlike most dairy products, it is unique because it undergoes a combined lactic acid and alcoholic fermentation.
This dual fermentation is carried out by a symbiotic culture of lactic acid bacteria and lactose-fermenting yeasts.

Step 2: Detailed Explanation:
Traditionally, Koumiss is prepared exclusively from mare's milk (horse milk).
Mare's milk contains a significantly higher concentration of lactose (around \( 6\% \) to \( 7\% \)) compared to cow's milk (around \( 4.5\% \) to \( 5\% \)).
This high sugar content is critical because it provides ample substrate for the yeasts (such as Kluyveromyces marxianus) to produce alcohol and carbon dioxide, alongside the lactic acid produced by lactobacilli (such as Lactobacillus delbrueckii ssp. bulgaricus).
The resulting beverage is slightly sparkling, acidic, and contains about \( 1\% \) to \( 2.5\% \) alcohol.
While modern commercial variants may use modified cow's milk, the authentic and traditional product is made from mare's milk.

Step 3: Final Answer:
Koumiss is traditionally prepared from Mare's milk.