Chocolate Yeast Bread

Chocolate Yeast Bread

Baking Team:

Head Baker - Jess M

Photographer - Adam T

Blog Writer - Ethan K

Science

Cellular Respiration

Yeast bread is made when yeast is mixed with other ingredients to make dough, and the yeast goes through alcoholic fermentation. Alcoholic fermentation is a process where glucose is turned into ethanol (alcohol), carbon dioxide, and energy. The process of alcoholic fermentation takes place in the cytoplasm of yeast cells. Having yeast which goes performs alcoholic fermentation is important in baking bread because it turns the dough from a rough dense mass into a smooth extensible dough, which means that the dough can be stretched, and that when it is cooked it will have the texture that we like our bread to have.

Anaerobic Respiration VS Aerobic Respiration

Yeast cells perform alcoholic fermentation and respiration. They perform cellular respiration because it is what creates ATP and all organisms need to do it. Alcoholic fermentation is anaerobic, and it is what happens when there is no oxygen and cellular respiration cannot be performed. Humans cells also go through cellular respiration, but instead of alcoholic fermentation, our cells go through lactic acid fermentation. This causes fatigue in our muscles, making us stop what we are doing in order to get some oxygen. This is important for making bread because it means that yeast is the only cell that can be used to make bread.

CO2 Cycle

Yeast respires and releases carbon dioxide. In nature, yeast is found in plants, which take in carbon dioxide and perform photosynthesis. Photosynthesis then releases oxygen and all living things take it in and go through cellular respiration.

Recipe

Ingredients

⅛ cup of warm water

½ cup of milk

½ egg

1 ½ tablespoons of brown sugar

1 ½ cups of flour

1 tablespoon of white sugar

½ teaspoon of salt

¾ teaspoon of active dry yeast

1 tablespoon of margarine

Chocolate chips

Steps

1. Place ingredients in a mixing bowl/ bag.

2. Mix ingredients

3. When the ingredients are mixed together, take out the dough and knead it for about ten minutes.

4. When you are five minutes in, start mixing in chocolate chips

5. Roll dough into the shape of a bread

6. Place in a pan

7. Add chocolate chips on the top for decoration

8. Place under a light to activate the yeast

9. Bake bread in the oven for about two hours

10. Enjoy

Rationale

We chose this bread recipe because we wanted a nice bread that also tasted sweet, so that it could be eaten with breakfast, as a snack, or maybe as a dessert. To make this happen, we took a generic bread recipe and added more sugar, cinnamon, and chocolate chips. When eating, we found that the chocolate did not mix well with jam, but adding butter did taste good.

Reflection

The bread came out very well. The bread tasted a bit dry, which tasted good with butter, however it did not taste like it was meant to have chocolate mixed in it. If we were to make another loaf, I think it would be wise for us to either change up the bread recipe to make it more moist and sweet, or we should remove the chocolate chips and add an ingredient that is less sweet.