The Science of Cookies (2024)

FAQs

What is the science of baking cookies? ›

As the butter melts, the cookie's structure loosens, so that the water in the dough is able to combine with the baking soda, dissolving it. The baking soda then reacts to the acidic components present in brown sugar, creating gases that cause the cookie to rise.

Flour is the main ingredient that provides structure in a cookie – without it, there would be no cookie! The gluten in flour forms a web of sorts – the framework that catches the air bubbles/gasses given off during rising. This helps provide the structure.

Sugar creates texture

Sugar easily binds with water, which accomplishes two main things. 1) It locks in moisture, keeping your baked goods from drying out; and 2) It inhibits the development of gluten which keeps your cookies, cakes and sweet breads softer. Variances in sugar type will create different outcomes here.

Chemistry, as you mix different edible chemicals to create dough or batter, with tiny air bubbles trapped inside. Biology, as the culture of yeast provides carbon dioxide to make your bread rise. And physics, as those trapped gases expand and give the rise to the bakes.

Try using baking powder instead of baking soda. Baking soda encourages spreading while baking powder puffs the cookies up. If your recipe calls for 1 teaspoon of baking soda, you would use 3 to 4 teaspoons of baking powder.

Although sugar may seem like a simple ingredient, it plays a very important and complex role in cookie dough. It contributes to both texture and flavor in many ways: It melts in the heat of the oven to increase spread, and it creates little air pockets in the dough to expand and make cookies rise.

Oven temperatures are a crucial factor in baking. If your cookies consistently come out flat, you may have selected the wrong baking temperature. If you bake cookies using too much heat, the fats in the dough begin to melt before the other ingredients can cook together and form your cookie's rise.

Cornstarch gives the cookies that ultra soft consistency we all love. Plus, it helps keep the cookies beautifully thick. We use the same trick when making shortbread cookies. Egg yolk: Another way to promise a super chewy chocolate chip cookie is to use an extra egg yolk.

Room temperature butter is just the right consistency to incorporate air when it's creamed with sugar. These trapped air pockets result in risen, fluffy cookies. If the butter is any warmer, it won't incorporate enough air and your cookies will have less rise.

When the baking temperature reaches 300 degrees Fahrenheit, the sugar mixed into the batter reacts with the amino acids from the eggs, butter, and gluten. Both the proteins and the sugars break apart and recombine, forming new molecules that give the cake it's toasty aroma and rich golden brown color.

What is the biology behind baking? ›

In bread making, the yeast organisms expel carbon dioxide and alcohol as they feed off of sugars. As the carbon dioxide is formed, the bubbles are trapped by gluten in the wheat flour; this is why the dough volume increases or 'rises'.

Baking powder is a two-in-one chemical leavening that combines a powdered alkali (sodium bicarbonate) with a powdered acid (originally, tartaric acid). When moistened in a dough or batter, a chemical reaction takes place that produces carbon dioxide gas, inflating cookies, cakes, and pancakes.

The Maillard reaction

At 140°C, your biscuits will begin to brown. This is due to the Maillard reaction which occurs when proteins and sugars break down at high temperatures. This not only changes the appearance of your biscuits, but also changes the flavour and texture.

When the materials are heated they undergo a chemical change. The reaction is non reversible. The sugar, flour and eggs can no longer be separated. The properties of the materials have changed so it is a chemical change.