415A dairy, cheese and eggs practice questions.

Five free practice questions on dairy, cheese and eggs: block F of the Red Seal 415A Cook exam, about 10 of its 150 questions. They are in the exam's format: four options, one correct answer. Answer each one before opening the explanation. No account, no email.

01The questions

1. Procedural · Processes ingredients for eggs and egg-based dishes

   A cook making pastry cream must combine beaten yolks and sugar with 1 L of hot milk. How are the yolks tempered?

   1. Whisk some hot milk slowly into the yolks, then return them to the pot
   2. Tip the yolks straight into the boiling milk and whisk
   3. Heat the yolks alone in the pot, then pour in the hot milk
   4. Pour all the hot milk onto the yolks in one go, then stir
   Show the answer

   A. Correct. Tempering raises the temperature of the yolks gradually by whisking in a little hot liquid first, so they blend in smoothly instead of curdling. Then the tempered mixture goes back into the pot and is cooked, stirring, to the recipe's end point.

   Why not the others

   B. Yolks dropped into boiling milk set on contact, leaving scrambled bits through the cream. Tempering exists to stop exactly that.

   C. Yolks heated on their own scramble within seconds, well before any milk arrives. The yolks need liquid around them to warm evenly.

   D. Adding all the hot milk at once, without whisking, heats the yolks too fast in places and cooks them into lumps. Add a little at a time while whisking.

2. Procedural · Processes cheese, dairy and plant-based dairy alternative ingredients

   At a banquet, whipping cream that sat on the counter at about 18 °C will not reach stiff peaks for piping. What should the cook do?

   1. Thin it with milk and whip it at room temperature
   2. Chill the cream, bowl and whisk, then whip again
   3. Keep whipping at high speed until it firms up
   4. Whisk in icing sugar to stiffen the warm cream
   Show the answer

   B. Correct. Cream whips because partly solid fat globules link into a network that traps air, and that only happens when the cream is cold (about 4 °C). Chill everything, then whip to soft peaks for folding or to medium–stiff peaks for piping, and stop before it turns grainy.

   Why not the others

   A. Adding milk lowers the fat content below the roughly 30 % needed to whip, and the cream is still warm. Both changes make a stable foam less likely, not more.

   C. Warm fat is too soft to hold air, so beating longer does not give stable peaks. It pushes the cream toward a greasy, grainy texture and eventually separates it into butter and buttermilk.

   D. Sugar sweetens and adds a little stability once the cream is already whipping cold, usually added at the soft-peak stage. It cannot make warm, soft fat hold air.

3. Procedural · Cooks eggs and egg-based dishes

   A brunch cook is poaching eggs to order for eggs Benedict. How should the poaching water be kept?

   1. At a steady simmer of about 95 °C, with salt instead of vinegar
   2. At a rolling boil so the whites set instantly
   3. At about 50 °C so the yolks stay runny
   4. Just below a simmer, about 71–82 °C, with a little vinegar
   Show the answer

   D. Correct. Poaching water sits at about 71–82 °C with a little vinegar, which helps the surface of the white set quickly. Use the freshest eggs (thick whites hold their shape), slide them in, lift with a perforated spoon and blot. For banquets, poach ahead, shock in ice water, then reheat briefly in hot water.

   Why not the others

   A. A steady simmer is hotter than poaching range and its bubbles shred the white. Salt seasons the water but does not firm the white the way a little vinegar does.

   B. A rolling boil tosses the egg around and tears the white into ragged strands, and the outside toughens before the yolk warms. Poaching is a gentle, below-simmer method.

   C. At 50 °C the white will not set in any reasonable time; egg white starts to coagulate only around 60–65 °C. The runny yolk comes from timing, not from water too cool to cook the white.

4. Procedural · Selects cheese, dairy and plant-based dairy alternative ingredients

   A hospital adds a cheese plate for patients, many of them older adults or immunocompromised. Following Health Canada's advice on Listeria, which selection fits best?

   1. Any soft cheese, as long as the label says pasteurized
   2. Blue-veined cheese, because its mould crowds out bacteria
   3. Firm and hard pasteurized cheeses such as cheddar
   4. Raw-milk brie from a local artisan, served cold
   Show the answer

   C. Correct. Listeria grows at refrigeration temperatures and favours moist, low-acid cheeses. Health Canada's safer choices for older adults, pregnant people and people with weakened immune systems include pasteurized cheeses such as cheddar and hard cheeses such as Parmesan; cheese cooked into a hot dish such as a casserole or gratin is also a safer choice.

   Why not the others

   A. Pasteurization kills Listeria in the milk, but a cheese can be contaminated afterward during ripening, cutting or packing, and Listeria keeps growing in the cooler. That is why Health Canada tells higher-risk groups to avoid soft cheeses such as brie and camembert even when they are made from pasteurized milk.

   B. The blue mould is added for flavour and texture; it gives no protection against Listeria. Health Canada tells older adults, pregnant people and people with weakened immune systems to avoid all blue-veined cheeses, pasteurized or not.

   D. This is the highest-risk choice. Raw (unpasteurized) milk can carry Listeria, and a moist, soft-ripened cheese served cold gives it every chance; Health Canada advises people at higher risk to avoid it.

5. Procedural · Selects ingredients for eggs and egg-based dishes

   A catering client orders an egg-free vegan pavlova. Which egg substitute can be whipped into a stable meringue-style foam?

   1. Aquafaba (the cooking liquid from chickpeas)
   2. Ground flaxseed soaked in water
   3. A starch-based powdered egg replacer
   4. Puréed silken tofu
   Show the answer

   A. Correct. Aquafaba contains proteins and starches that whip into a foam much like egg white. Whip it with cream of tartar and sugar added gradually, then bake low and slow as for a French meringue.

   Why not the others

   B. A flax 'egg' forms a gel that binds muffins and cookies, but it has no foaming ability. It cannot hold air like a meringue.

   C. Most starch-based egg replacers bind and add a little lift in baking with chemical leavening. They do not whip into a stable, glossy foam.

   D. Silken tofu purées into a dense, smooth custard or mousse base. It adds body, not air, so it will not whip into a meringue.

02Answer key

03What block F covers

This block covers dairy products, cheese, plant-based dairy alternatives and eggs. It includes milk processing and cream fat levels, whipping cream, cheese types and cheese service, cultured creams, clarified butter, egg grades and pasteurized egg products, vegan swaps such as aquafaba, and cooking eggs: poaching, omelettes, hard-cooking, custards, soufflés and buffet scrambled eggs.

The Red Seal Occupational Standard names this block “Cheese, dairy, plant-based dairy alternatives, eggs and egg products”. It carries 6.7% of the exam, about 10 of the 150 questions, split across two tasks. The share column is each task's weight within the block, as the standard publishes it.

04What the questions turn on

Whipping cream needs fat and cold

Only cream of about 30 % fat or more whips to stable peaks, and 33 to 36 % whipping cream is the standard choice. The fat must be cold, about 4 °C, so chill the cream, the bowl and the whisk.

Which creams curdle

Sour cream and yogurt are acidic and fairly low in fat, so they curdle if boiled: temper them and stir them in off the boil. Crème fraîche, at roughly 30 to 40 % fat, can be simmered and reduced.

Egg cooking temperatures

Poaching water sits just below a simmer, about 71 to 82 °C, with a little vinegar. Crème anglaise thickens to nappe at 82 to 85 °C. Buffet scrambled eggs are cooked to 74 °C and held at 60 °C or above.

The green ring on boiled eggs

A grey-green ring around the yolk comes from long, hard cooking and slow cooling in the hot water. Simmer large eggs about 10 to 12 minutes instead of boiling them, then shock them in ice water right away.

05The other blocks

The 415A exam has 13 blocks. Each has its own page of free questions:

The 415A Cook practice exam page describes the full question bank. How these questions are written and checked: how our questions are made. Found a mistake? Tell us and we will fix it.