heat up the MASH to 65 degrees Celsius and maintain that temperature for about a half hour. This will ensure that the enzymes completely convert all the starches into sugar. Make sure it cools before adding the yeast.
to change the starch to maltose
Water, alcohol, malted barley, yeast.
If the temperature is too low, the yeast will remain dormant. If the temperature becomes too hot, the yeast organisms will be overwhelmed and killed before they can respire.
Water, malted barley, hops and yeast are the basic ingredients of all beers.
i would say room temp.
Yeast does different things based on temperature.
Budweiser is made from malted barley, rice, hops, yeast and water. The recipe for other A-B brands may differ.
Yeast digest just about any sugar, converting it into ethyl alcohol. Beer yeast, for example, thrive on maltose, the sugar of malted barley grain. Wine yeasts prefer fructose sugars found in fruits such as grapes or berries.
Respiration requires enzymes to catalyze the oxidative breakdown of glucose, the respiratory substrate for respiration. Enzymes in yeast require an optimum temperature of about 30-40 degree Celsius. Hence temperature is closely tied to the rate of respiration in yeast.
Budweiser is made from malted barley, rice, hops, yeast and water. The recipe for other A-B brands may differ.
The ideal temperature for yeast growth is 100 to 115 degrees F, but for leavening purposes, the ideal temperature is 80 to 95 degrees F. If the yeast grows too quickly, it will produce large bubble pockets in the bread. Yeast begins to die at 120 degrees F. So it's important to let your yeast dough rise in a spot where the temperature is stable. The cooler the temperature, the slower the yeast grows. It will grow in the refrigerator, but very slowly. I don't know the minimum temperature for it to grow.
Yeast need warm temperatures in order to grow. The perfect temperature for yeast is about 110 degrees F. Yeast will not start to reproduce and rise without warm temperatures to activate it.