CSA CSA Sugar Chemistry & Cooking Stages 2 — Questions and Answers
Question 1: What term describes the uncontrolled recrystallization of a sugar syrup during cooking?
- Caramelization
- Inversion
- Graining (Correct answer)
- Hydrolysis
Correct answer: Graining
Graining refers to when sucrose crystals form suddenly throughout a syrup, turning it opaque and unusable for sugar artistry.
Question 2: Which cooking stage produces a syrup used for making Italian meringue and Swiss buttercream?
- Thread stage
- Soft ball stage
- Soft crack stage (Correct answer)
- Hard ball stage
Correct answer: Soft crack stage
The soft crack stage at 270–290°F is not used for meringue; Italian meringue uses the firm ball to hard ball range (248–265°F) poured into whipping egg whites.
Question 3: What is the purpose of adding cream of tartar or lemon juice to a sugar syrup?
- To add flavor
- To increase sweetness
- To invert sucrose and prevent crystallization (Correct answer)
- To speed up cooking
Correct answer: To invert sucrose and prevent crystallization
Acids like cream of tartar or lemon juice hydrolyze sucrose into glucose and fructose (invert sugar), which inhibits crystal formation.
Question 4: What is the ideal relative humidity for a sugar artist's workspace when working with pulled or blown sugar?
- Below 40% (Correct answer)
- 50–60%
- 65–75%
- Above 80%
Correct answer: Below 40%
Humidity below 40% is ideal for sugar work because high humidity causes sugar pieces to absorb moisture and become sticky or collapse.
Question 5: Which type of sugar substitute is preferred for competition sugar showpieces because it resists moisture and stays clear?
- Trehalose
- Maltitol
- Isomalt (Correct answer)
- Xylitol
Correct answer: Isomalt
Isomalt is the industry standard for competition showpieces due to its clarity, moisture resistance, and stability compared to sucrose.
Question 6: What sugar cooking stage (approximately 235–240°F) is used as the base for classic American-style poured fondant?
- Thread stage
- Soft ball stage (Correct answer)
- Firm ball stage
- Soft crack stage
Correct answer: Soft ball stage
Poured fondant is made by cooking syrup to the soft ball stage (235–240°F) then agitating it while cooling to create fine, smooth crystals.
CSA CSA Sugar Chemistry & Cooking Stages 2
What term describes the uncontrolled recrystallization of a sugar syrup during cooking?