About 111 degrees is ideal...too hot and you may kill the little guys, too cold and the yeast wont proof
Warm water is fine, about the same as body temp, if it's too hot it will kill the yeast.
When making yeast bread, the yeast should be dissolved in warm water. The best temperature is between 90 and 110°F.
The water used to dissolve yeast in making bread should be between 100 and 110 degrees Fahrenheit.
111 degrees
Adding warm water will expand yeast cells rapidly
warm water - yeast needs warm water to become active. suger is the yeast's food .it gives the yeast the energy it needs to grow. cold water - the cold water kills the yeast (kind of) normal room temperature - the yeast just becomes in active and doesn't react
Warm Water, Yeast and Lactose
Very hot liquids will kill off the yeast. Only use slightly warm water to activate the yeast.
Your recipe should indicate where and how to add the yeast, but yeast does not dissolve well in milk (if at all). Yeast forms into large clumps when mixed directly with milk and will take much longer to activate. I made this mistake the first time I tried to substitute milk for water when making bread. The usual way of adding yeast to such a recipe is to fully dissolve the yeast in 1/4 cup of warm water (about 110 degrees Fahrenheit). If the water is not warm enough, it won't activate the yeast and if it's too warm, it can kill the yeast. One of my colleagues proofs the yeast in the usual way (1/4 cup warm water, 1 tsp sugar, 1 tsp yeast), then adds the rest of the yeast to the water, mixes the dry ingredients with the milk for the recipe, then adds the water-yeast mixture to that. He claims that it works perfectly. Of course, if you use 1/4 cup of water to dissolve your yeast, subtract 1/4 cup of milk from the recipe unless otherwise indicated. And also make sure you're using the proper yeast for whatever it is you are baking.
If the water is too hot, it kills the yeast. It stops working and therefore wouldn't make the bread rise. If the water was too cold, it wouldn't do anything to the bread. If you use warm water, however, then it gives enough energy to help the yeast work so that the bread can rise, making you're loaf.
No,it does not need sugar to foam just water and yeast to make it foam u want it to foam alot put sugar.
flour , yeast , warm water , salt
Put a little of the yeast in a glass of warm water. If you see tiny bubbles, the yeast is still good. If not, adding the dead yeast will not make the dough rise.
You can use active dry yeast as a substitute for instant dry yeast. However, you will need to dissolve it in warm water before adding it to your recipe. Another option is using fresh yeast, but be sure to adjust the quantity as it is not as concentrated as dry yeast.
when yeast is mixed with warm water it produces carbondioxide gas it realeases from water in form of bubbles
it activates the yeast and without it the yeast wouldn't rise