Transcript YEAST BREADS - Saint Paul Public Schools

YEAST BREADS
LEAVENING AGENTS
Makes a baked product rise.
1. Air-
Air is created by sifting,
creaming together sugar & fat,
whipping.
2. Steam
3. Baking powder
4. Baking soda
5. Yeast
LEAVENING AGENTS
Makes a baked product rise.
• What is the difference between baking soda
and baking powder?
– Baking soda is pure sodium bicarbonate. When
baking soda is combined with moisture and an
acidic ingredient, the resulting chemical reaction
produces bubbles of carbon dioxide that expand
under oven temperatures, causing the baked good
to rise.
– Baking powder contains sodium bicarbonate, but it
includes the acidifying agent already (cream of
tartar).
YEAST BREADS
• Yeast breads use YEAST as a
leavening agent.
• Yeast needs warmth, food and
moisture to grow.
• Small amounts of sugar speeds
the activity of yeast. (too
much sugar will inhibit yeast
activity)
• Salt inhibits the speed of
yeast activity.
YEAST BREADS
Temperature and yeast
• 50 degrees- yeast begins to activate
• 78-82 degrees- yeast produces the most gas
• 120 degrees- yeast begins to die
• 143 degrees- yeast is useless for baking.
YEAST BREADS
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KNEADING DOUGH
Kneading dough develops gluten to give the
dough shape.
Gluten- a protein in flour.
If you stir wet flour mixture a little, gluten
develops a little and bread is tender.
If you stir (knead) wet flour mixture a lot,
gluten develops a lot and the bread is tough.
– You only want to stir/mix quick breads a little to
form a small amount of gluten
– You want to stir/mix (knead) yeast breads a lot to
form a large amount of gluten.
YEAST BREADS
• You may knead bread
by hand or with your
dough hook on the
electric mixer.
• Kneading dough by
hand:
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Fold
Push
Turn
Repeat
YEAST BREAD BAKING BASICS
DVD QUESTIONS
• Why is it important for the water to be the
correct temperature to mix yeast?
• What do fats do in yeast breads?
• Name 2 types of flour available for making
bread?
• What does kneading do for the bread?
• How can you tell if you have kneaded bread
long enough?
• What purpose does sugar serve to yeast
bread?
YEAST BREAD BAKING BASICS
DVD ANSWERS
• Why is it important for the water to be
the correct temperature to mix yeast?
- Yeast is a living organism and if the water is too hot
it will kill the yeast and the dough will not rise.
•What do fats do in yeast breads?
- Fats make breads soft and tender.
• Name 2 types of flour available for
making bread?
– Rye, soy, whole wheat, rice, all-purpose, bread flour.
•What does kneading do for the bread?
– It forms gluten. It makes the dough smooth and
elastic.
• How can you tell if you have kneaded
bread long enough?
- When an indentation in the center of the bread
stays in place.
• What purpose does sugar serve to
yeast bread?
- Sugar acts as food for the yeast.