CMC Culinary Techniques & Food Preparation 2 — Questions and Answers
Question 1: Which emulsification technique is used when making a classical hollandaise sauce?
- Hot emulsion using clarified butter whisked into egg yolks over a bain-marie (Correct answer)
- Cold emulsion using whole butter blended with raw eggs at room temperature
- Temporary emulsion formed by vigorously shaking oil and lemon juice
- Permanent emulsion stabilized with lecithin-rich mustard as the sole emulsifier
Correct answer: Hot emulsion using clarified butter whisked into egg yolks over a bain-marie
Hollandaise is a hot emulsion made by whisking clarified butter into egg yolk reduction over indirect heat, using the yolk proteins and lecithin as emulsifiers.
Question 2: When fabricating a saddle of lamb, what is the correct term for removing the silver skin and excess fat while leaving the eye muscle intact?
- Frenching
- Trimming and seaming
- Denuding (Correct answer)
- Butterflying
Correct answer: Denuding
Denuding refers to completely removing the silver skin, fell, and excess fat from a primal or sub-primal cut while preserving the primary muscle.
Question 3: In the preparation of a classic consommé, what is the primary role of the 'clearmeat' (ground meat, mirepoix, acid, and egg whites)?
- To add flavor and body through gelatin extraction
- To clarify the stock by attracting and trapping impurities as the raft forms (Correct answer)
- To thicken the liquid through starch gelatinization
- To season the consommé and balance its acidity
Correct answer: To clarify the stock by attracting and trapping impurities as the raft forms
The clearmeat forms a raft as proteins coagulate, acting as a filter that attracts and traps fat and suspended particles to produce a crystal-clear consommé.
Question 4: A chef is fabricating fish using the 'en portefeuille' technique. What does this involve?
- Cutting a thick fish fillet into thin escalopes by slicing horizontally
- Butterflying a fillet and folding it around a stuffing like a wallet (Correct answer)
- Rolling a sole fillet into a paupiette shape secured with a toothpick
- Scoring the skin of a whole fish to promote even heat penetration
Correct answer: Butterflying a fillet and folding it around a stuffing like a wallet
En portefeuille (French for 'wallet') involves butterflying a fish fillet so it opens like a wallet, then enclosing a stuffing within the folded fillet.
Question 5: Which stage of sugar cooking produces a product that, when a small amount is dropped into cold water, forms a firm ball that holds its shape but is still pliable?
- Soft-ball stage (235–240°F)
- Firm-ball stage (245–250°F) (Correct answer)
- Hard-ball stage (250–265°F)
- Soft-crack stage (270–290°F)
Correct answer: Firm-ball stage (245–250°F)
The firm-ball stage (245–250°F) produces sugar that forms a firm yet pliable ball in cold water, used for caramels and nougat.
Question 6: What distinguishes a 'liaison' from a roux as a thickening agent in classical French cuisine?
- A liaison is added at the start of cooking while a roux is added at the end
- A liaison is a mixture of egg yolks and cream added off heat to finish a sauce without boiling (Correct answer)
- A liaison uses cornstarch instead of flour to achieve a clearer consistency
- A liaison thickens through gelatin extraction from bones rather than starch
Correct answer: A liaison is a mixture of egg yolks and cream added off heat to finish a sauce without boiling
A liaison is a mixture of egg yolks and heavy cream tempered and stirred in off-heat; it enriches and thickens without boiling since that would cause the yolks to curdle.
Question 7: When preparing a classic brioche dough, at what point in the mixing process should the butter be incorporated?
- At the very beginning with all dry ingredients to create a shortening effect
- After full gluten development has been achieved so the fat coats existing gluten strands (Correct answer)
- Simultaneously with the eggs to prevent over-hydration of the flour
- After the initial fermentation (bulk proof) to laminate the dough
Correct answer: After full gluten development has been achieved so the fat coats existing gluten strands
Butter is added after full gluten development so the fat coats already-formed gluten strands rather than shortening them before they form, yielding a tender yet structured crumb.
CMC Culinary Techniques & Food Preparation 2
Which emulsification technique is used when making a classical hollandaise sauce?