作法
- 厚重鍋中將牛奶加熱至 90°C—接近沸點。維持 5 分鐘以殺死雜菌。
- 降溫至 45°C—溫度對菌種繁殖至關重要。
- 拌入菌種，倒入乾淨的瓶子中蓋好。
- 置於溫暖處（28 至 30°C）8 至 12 小時不要動，Katyk 會凝固並發展出酸味。
- 冷藏至少 4 小時，Katyk 即可享用。
- 做飲品時：與冷水徹底攪拌（約 1:1）。加入鹽、蒔蘿、薄荷、小黃瓜與胡椒。冰飲。做冷湯時：水加少一些，稠度更厚。這道飲品旨在解渴與補水，特別適合烏茲別克炎熱夏季。
Common questions
Can 卡蒂克發酵奶（Katyk） be made ahead?
卡蒂克發酵奶（Katyk） is best made and eaten the same day, but the components can be prepped earlier — chop and measure the ingredients up to a day ahead, refrigerated separately. Final cooking takes about 720 minutes.
Is 卡蒂克發酵奶（Katyk） spicy?
卡蒂克發酵奶（Katyk） as written is mild to mildly warming — the heat comes from aromatics rather than chili. Add fresh sliced chili or chili oil at the end if you'd like to push it spicier.
Is 卡蒂克發酵奶（Katyk） vegetarian or gluten-free?
This recipe is suitable for most diets. If you have specific restrictions, the substitutions section in each ingredient note covers the most common swaps.
How hard is 卡蒂克發酵奶（Katyk） to make at home?
卡蒂克發酵奶（Katyk） is approachable for a home cook with basic stove skills — total time about 730 minutes, no special technique required.
Can 卡蒂克發酵奶（Katyk） be scaled up or down?
This recipe is written for 4 servings. To scale, multiply each ingredient proportionally; the cooking times stay the same up to about double the volume. Beyond that, expect to cook in batches because of pan size and heat distribution.
文化背景
Katyk 是烏茲別克與突厥的發酵奶傳統—中亞普遍可見（哈薩克 Ayran、吉爾吉斯 Airan、土耳其 Ayran 都是親戚）。烏茲別克版本比土耳其親戚更濃稠。每戶家庭都有菌種，有時透過連續發酵維持多年。冷湯版（稱為 Chalop）是塔什干夏季常備品。它被視為健康食物；烏茲別克傳統認為 Katyk 有延壽與助消化之效。
