background:
ginger juice + milk protein --> curd
or
zingibain protease生姜凝乳酶 + casein酪蛋白 --> milk coagulant凝固
Ingredients:
old ginger 35g
高鈣低脂奶 (十字牌或維記 或其他高蛋白質含量 >= 4 g per 100g),重要是蛋白質成份高, 並非奶脂 . 鈣亦有助凝固.
糖 10g
Tool:
grate
thermometer
preparation:
grate ginger and make ginger juice. 12 g is needed
the ginger juice to milk is 1: 8 ( ie 12 g ginger juice to 100g milk)
add 10 g sugar to milk
use hot water bath to warm milk up to 70 deg C. Stir the milk to dissolve the sugar
Remove the milk from water bath, and let milk cool down to 60 deg C ( zingibain is most effective at 60 deg C)
If temperature is 70 deg C or higher, zingibain protease will be denatured.
pour ginger juice to bowl
pour milk at height of 20 to 30 cm above the bowl
don't stir the mixture! and let it rest for 20 min
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