+ L2 Y8 T. Z9 R发面的原理:% Q. e G. \. ]: E$ v
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1.活酵母在面团里分解糖类物质产生气体.& F. z) l7 T3 a3 i d" b
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2气体被面团包裹,使面团膨大.当馒头被蒸熟时,里面的气体逸出,留下的小孔洞使馒头松软.- l# A t5 `) z9 ?
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考虑问题的可能:) d5 P: G* n& l: C0 i
1.要使用高筋面粉(面包粉),普通粉也行.2 i" Z, y( m% Q+ Z; A
Wate tempeature should be the same as your body temperature, means it is about 36~38 degree. You can test it by using your figures. Please remeber do not olny use cold water and hot water. 7 g3 C- C+ j. S% {6 o4 j
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Usually I prepare a big bowl, mix hot water and cold water to adjust water temperature(you can use only milk instead of water, same mathod), then put yeast in water, add a tea spool sugar. Wait until yeast melt. So you can start to make dough.