What is nougat, and why is it in every candy bar?
Adam Ragusea
12 min, 9 sec
An exploration of nougat's composition, the science behind its texture, and the differences between various confections.
Summary
- Nougat is an aerated confection made stable by proteins, with a sugar matrix continuous phase.
- The texture of nougat and similar confections is affected by air content, water content, sugar type, and protein type.
- Factors like humidity can affect water content in candy, altering its texture and consistency.
- The texture of nougat can range from brittle to chewy, depending on the crystallization of the sugar.
- Candy making is compared to bread making, where subtle ingredient variations create a wide range of products.
Chapter 1
Chapter 2
Explains the composition and structure of nougat.
- Nougat is an aerated confection stabilized by protein with a sugar matrix as the continuous phase.
- The continuous phase in confections like chocolate is fat, while in nougat it's a sugar matrix.
- Proteins form a web around air bubbles, making the whipped sugar syrup stable and stretchy.
Chapter 3
Discusses how nougat differs from meringue, marshmallow, and divinity based on key variables.
- Nougat is differentiated from similar confections by air content, water content, sugar type, and protein type.
- Nougat typically uses egg or soy protein, whereas marshmallow includes gelatin for a bouncy texture.
- The texture of gelatin-based confections is due to amino acid structures that form complex networks.
Chapter 4
Explains the role of different proteins in affecting the texture of confections.
- Gelatin provides marshmallows with a squishy texture, while egg and soy proteins in nougat create a different structure.
- Albumin and globulin form simpler networks than gelatin, resulting in less bouncy textures.
- Marshmallow fluff uses eggs but not gelatin, and its categorization as marshmallow is due to its water content.
Chapter 5
Provides a practical look at nougat production in a candy factory.
- Crown Candy factory in Macon, Georgia demonstrates nougat making for their log rolls.
- They use a combination of pre-whipped sugar and egg mixture, dried egg albumen, and different sugars.
- Hot syrup is whipped into the egg mixture, and the nougat is extruded and cut into logs.
Chapter 6
Details how water content influences the texture of nougat and other sweets.
- Higher water content in confections like marshmallow fluff and Italian meringue results in a softer texture.
- Controlling water content is crucial and can be managed by cooking syrup to specific temperatures.
- Weather and humidity can affect water content in candy, requiring adjustments during cooking.
Chapter 7
Explores how different sugars and their crystallization affect the texture of nougat.
- Crystalline sugar in a Three Musketeers bar creates a brittle texture, while chewy nougats like Charleston Chew have more corn syrup.
- The ratio of cane sugar to corn syrup and the presence of seed crystals contribute to the final texture of nougat.
- Inverting sugar by breaking down sucrose prevents crystallization and affects the chewiness of confections.
Chapter 8
Discusses air content in nougat and the food industry's approach to using air in products.
- The density of nougat is affected by the amount of air whipped into it, with marshmallows being less dense than nougat.
- In the food industry, incorporating air into products like nougat is cost-effective since air is free.
- Nougat's popularity in candy bars is partly due to its airy texture, providing volume without additional cost.
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