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National Chemistry Week - Experiments - A Chemical Engineer’s Recipe for Chocolate Chip Cookies
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Objective:
Household cooking involves chemistry. Here is a cooking experiment in which the product is edible.
Materials:
- 236.6 cm3 (500 mL) partially hydrogenated tallow triglyceride (butter or margarine)
- 177.45 cm3 (177 mL) crystalline sucrose (sugar)
- 177.45 cm3 (177 mL) unrefined sucrose (brown sugar)
- 4.9 cm3 (5 mL) 4-hydroxy-3-methoxybenzaldehyde (vanilla)
- 2 calcium carbonate-encapsulated avian albumen-coated protein (eggs)
- 532.35 cm3 (500 mL) gluten (flour)
- 4.9 cm3 (5 mL) sodium chloride (salt)
- 4.9 cm3 (5 mL) sodium bicarbonate (baking soda)
- 1 package of theobroma cacao (chocolate chips)
- 236.6 cm3 (250 mL) chopped de-encapsulated legume meats (nuts)
- measuring spoons
- measuring cups
- mixing bowls
- cookie sheets
Procedure:
- Cream the partially hydrogenated tallow triglyceride, methyl ether of protocatechuic aldehyde, crystalline and unrefined sucrose in a bowl.
- Add the calcium carbonate-encapsulated avian albumen-coated proteins and mix well.
- In a separate bowl combine the gluten, sodium chloride, and sodium bicarbonate. Add to creamed mixture.
- Stir in theobroma cacao and de-encapsulated legume meats.
- Place the final mixture piecemeal onto a cookie sheet.
- Heat in an 463 K (190°C/ 375°F) oven for 8-10 minutes and allow the chemical reactions to take place.
- Remove from oven and place on cooling rack.
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