CPC Frozen Desserts & Ice Cream 2 — Questions and Answers
Question 1: What is 'tempering' in the context of frozen dessert service?
- Coating ice cream in chocolate
- Allowing ice cream to soften slightly at room temperature before scooping for better texture (Correct answer)
- Churning ice cream at a slower speed
- Adding stabilizers to the mix before freezing
Correct answer: Allowing ice cream to soften slightly at room temperature before scooping for better texture
Tempering frozen desserts means allowing them to warm slightly (from deep-freeze to serving temperature) so they become scoopable and develop optimal texture.
Question 2: What is the purpose of stabilizers (e.g., locust bean gum, guar gum) in ice cream?
- To increase sweetness
- To slow the growth of ice crystals and maintain smooth texture during storage (Correct answer)
- To increase fat content
- To reduce churning time
Correct answer: To slow the growth of ice crystals and maintain smooth texture during storage
Stabilizers bind water and slow ice crystal growth (recrystallization) during temperature fluctuations, keeping ice cream smooth throughout its shelf life.
Question 3: What is pâte à bombe used for in frozen dessert production?
- As a crunchy topping for ice cream
- As an aerated egg yolk base made by whipping yolks with hot sugar syrup, used to lighten frozen mousses and parfaits (Correct answer)
- As a chocolate glaze for frozen cakes
- As a pastry dough for frozen dessert bases
Correct answer: As an aerated egg yolk base made by whipping yolks with hot sugar syrup, used to lighten frozen mousses and parfaits
Pâte à bombe is a light, stable emulsion made by whipping egg yolks with boiling sugar syrup; it is the base for parfaits, frozen mousses, and semifreddos.
Question 4: What is a 'semifreddo'?
- A partially frozen fruit sorbet
- An Italian semi-frozen dessert made with whipped cream and/or meringue, giving a mousse-like frozen texture (Correct answer)
- A type of Italian gelato
- A frozen custard from the southern United States
Correct answer: An Italian semi-frozen dessert made with whipped cream and/or meringue, giving a mousse-like frozen texture
Semifreddo (Italian for 'half cold') is a still-frozen dessert with a light, mousse-like texture achieved through the incorporation of whipped cream and/or Italian meringue.
Question 5: What causes 'sandiness' or a gritty texture in ice cream?
- Too much fat in the mix
- Lactose crystallization due to improper freezing or high milk solids content (Correct answer)
- Too much overrun
- Insufficient stabilizers only
Correct answer: Lactose crystallization due to improper freezing or high milk solids content
Sandiness in ice cream is caused by lactose crystallization, which occurs when lactose concentration is too high or the product undergoes temperature fluctuations during storage.
Question 6: At what temperature should ice cream typically be stored to maintain optimum quality?
- -10°C (14°F)
- -18°C (0°F) or below (Correct answer)
- -5°C (23°F)
- -25°C (-13°F)
Correct answer: -18°C (0°F) or below
Ice cream should be stored at -18°C (0°F) or colder to minimize ice crystal growth and maintain texture and quality during long-term storage.
CPC Frozen Desserts & Ice Cream 2
What is 'tempering' in the context of frozen dessert service?