自制优格配蓝莓奇异籽 Homemade Yoghurt with Blueberries and Chia Seeds

前两次做了自制优格和自制无糖优格，这次我又做优格咯~

一样选用新鲜，没有经过UHT杀菌科技的鲜奶。

可是，这次我又用了不同优格来当starter。

这次用的是Emmi Swiss Premium Yoghurt。

成品一样让我满意。

优格越做越得心应手了~

自制的优格，配上蓝莓和奇异籽，当甜点，还真不错！

材料：

牛奶--1000 ml
市售优格--1罐（100g）（确保有Lactobacillus acidophilus, Lactobacillus bulgaricus 和 Streptococcus thermophilus 的菌种）
白糖--2 tbsps

做法：

1. 市售优格取出放室温约30分钟。
2. 将牛奶和白糖倒入干净的焖烧锅内锅，以中小火加热至牛奶的边缘开始出现小气泡，熄火。
3. 让牛奶降温至约40-43度C。（没有温度计，可用手指沾牛奶，温度比体温稍微高一些即可）
4. 将市售优格倒入牛奶中，用干净的汤匙搅拌均匀。
5. 把内锅盖上盖子，锁入焖烧锅外锅，让其保温。
6. 让牛奶静置8-12个小时，才可以掀开盖子看成品。
7. 如果牛奶已经变浓稠或如豆腐花状，并带有优格的清香，就代表牛奶发酵成功！
8. 将自制优格倒入事前已消毒过并晾干的瓶子里，放入冰箱冷藏。

备注：

1. 当自制优格发酵好时，优格的表面会出现一层透明的乳清。这乳清有营养，可以吃，千万不要倒掉。
2. 瓶子可以用沸水烫过，再用吹风筒吹干或放入烤箱烤片刻作消毒的作用。
3. 购买市售优格时，确保里头含有上述所说的菌种，并且不要过期，不然优格会做不成。
4. 基本上只要确保牛奶的温度不过高，并可以保持在40-43度C，那牛奶发酵的成功机率就会很高了。（因为过高的温度会将菌种杀死）
5. 如果家中没有焖烧锅，可以用较大的保温瓶做但分量自行斟酌，并用毛巾将保温瓶包起来，帮助保温。

食后感：

味道（闻）：和市售优格的一样
味道（吃）：和市售优格的一样
浓稠度（Texture）：和市售优格一样

Ingredients：

Milk--1000 ml

Store-bought Yoghurt--1 cup（100g）（Make sure that it contains Lactobacillus acidophilus, Lactobacillus bulgaricus and Streptococcus thermophilus ）

Sugar--2 tbsps

Method：

1. Remove the store-bought yoghurt from fridge and put it under room temperature for approx. 30 mins.
2. Pour the milk and sugar into a clean inner pot of thermal cooker. Heat over medium low heat til it started to form small bubbles at the edge. Off the heat.
3. Let the milk cool down to approx. 40-43oC. (If there is no thermometer to measure the temperature, touch the milk with your clean finger to feel it. Ideally it should be slightly warmer than your body temperature)
4. Pour the store-bought yoghurt into the milk and stir gently with a clean spoon.
5. Cover the inner pot with its lid, lock it into the insulator to let it insulate.
6. Set the thermal cooker aside for 8-12 hours for fermentation to take place, do not open the lid before that.
7. If the milk has become thicker in texture or coagulated and possesses fragrant of yoghurt, it means that the milk has been successfully fermented into yoghurt!
8. Pour the homemade yoghurt into a pre-sterilized bottle. Refrigerate.

Note：

1. Once fermentation has completed, there is a layer of clear liquid which is known as whey. It is nutritious, so, do not discard it.
2. The bottle can be sterilized by pouring boiling water in it and blow dry with hair dryer or heat it in an oven for a while.
3. Make sure that the store-bought yoghurt contains the above-mentioned bacteria strains and do not buy expired yoghurt, else it will cause failure in making yoghurt.
4. Basically, as long as the milk temperature is not too high and can be maintained at 40-43oC, the chances of making yoghurt successfully is high. (This is because high heat will kill the bacteria strains which are essential for fermentation to take place)
5. If there is no thermal cooker in your house, you can use a big thermos to make your own yoghurt (adjust the quantity accordingly) and wrap the thermos with a thick towel as to facilitate in insulation.

Feedback：

Smell：Same as store-bought yoghurt

Taste：Same as store-bought yoghurt

Texture：Same as store-bought yoghurt