Five free practice questions on grains, pulses, nuts and tofu: block H of the Red Seal 415A Cook exam, about 11 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
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A banquet kitchen is making rice pilaf for 150 guests in hotel pans. Which sequence is the pilaf method?
- Sweat onion in fat, toast the rice, add hot stock, cover and bake unstirred
- Toast the rice, add hot stock a ladle at a time and stir constantly
- Add rinsed rice to cold stock, boil it and stir every few minutes
- Boil the rice in plenty of salted water, drain, then toss with butter
Show the answer
A. Correct. Toasting coats each grain in fat so the grains stay separate; hot stock (typically about 1.5–2 parts to 1 part long-grain rice by volume) keeps the cooking even. Cover and finish in a moderate oven or over low heat without stirring, rest, then fluff with a fork.
Why not the others
B. That is the risotto method. Constant stirring rubs starch off the grains to make a creamy dish, the opposite of a pilaf's dry, separate grains.
C. Skipping the toasting step loses the pilaf's defining flavour and grain coating, and stirring breaks the grains and releases starch, making the rice sticky. A pilaf is covered and left alone.
D. That is the boiling-and-draining (pasta) method. It works for some long-grain rice, but it skips the toasting in fat and cooking in a measured amount of stock that make a pilaf.
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A ship's galley cook is preparing tempeh for a grilled vegan main. Which step is standard before the tempeh is marinated?
- Steam or simmer it for about 10 minutes
- Scrape off the white coating before cutting
- Soak it overnight in cold water to rehydrate it
- Press it under weights, as with tofu
Show the answer
A. Correct. Tempeh is a firm cake of fermented soybeans. A short steam or simmer mellows its slightly bitter edge, softens it and opens it up to take in the marinade. Then marinate, grill and glaze.
Why not the others
B. The white coating is the mycelium of the culture that binds the beans into a cake; it is normal and edible. A slimy feel, pink or yellow patches or an ammonia smell are the signs to discard.
C. Tempeh is not a dried product and does not need rehydrating. An overnight soak waterlogs it and leaves a moist protein food sitting for hours with no benefit.
D. Tempeh is dense and fairly dry, not packed in water, so pressing expels nothing and can crack the cake. Pressing is the step for firm tofu.
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A test kitchen is making a vegan muffin and replacing each egg with flaxseed, about 7 g (1 tbsp) of flax per egg. How should the flax be prepared?
- Toast the seeds until they pop, then grind them into the batter dry
- Grind it, mix it with about 45 mL of water and let it stand to a gel
- Soak the whole seeds overnight, strain, and discard the liquid
- Add the whole seeds dry to the flour in place of the egg
Show the answer
B. Correct. The seed coat of flax holds mucilage that forms a sticky gel when hydrated; grinding exposes it. After 5–10 minutes the mixture binds and moistens a batter much like egg. Chia works the same way and gels even when whole.
Why not the others
A. Toasting adds a nutty flavour but gives no gel, so there is still no binder or moisture to replace the egg. The ground seed must be mixed with water and allowed to thicken.
C. The liquid is the useful part: it is the gel (mucilage) that does the binding. Straining it off throws away the egg replacement.
D. Whole, dry flaxseed does not hydrate into a gel in the batter, so it adds texture but no binding or moisture. Grind the seeds and pre-hydrate them.
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A remote camp cook opens a 10 kg sack of dried pinto beans for a chili. What should be done before the beans are soaked?
- Rinse them in hot water to kill any insects and loosen the dirt
- Dry-roast them briefly in the oven to kill insects before soaking
- Spread them on a tray, pick out stones and debris, then rinse in cold water
- Soak them straight from the sack, since the debris floats off in the water
Show the answer
C. Correct. Dried pulses can carry rocks, bits of metal, twigs, leaves and insects. Spreading them in a thin layer lets you pick out contaminants and shrivelled or discoloured beans, and a cold-water rinse then removes dust before soaking. Any lot with insects or signs of chemical contamination is discarded, not washed.
Why not the others
A. Hot water does not sanitize dried beans and starts to cook their surface unevenly. Insects are a sign of contamination that means the product is discarded, not washed; the RSOS calls for a cold-water wash.
B. Roasting does nothing to remove stones, metal or twigs, and an infested lot should be discarded rather than heat-treated. Inspect and sort by hand, then rinse in cold water.
D. Only light debris and shrivelled beans float; stones and metal sink with the beans and end up in the pot, where they can break a tooth. The RSOS inspection step exists precisely because soaking does not remove heavy contaminants.
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A quick-service grill cooks raw, frozen plant-based burger patties. How should the cook confirm the patties are done?
- Cook for the time printed on the box, whatever the grill heat
- Press the patty with a finger; firm means done, as with steak
- Cut one open and check that no pink colour remains inside
- Probe the thickest part and reach the temperature on the label
Show the answer
D. Correct. The RSOS says doneness is determined by sensory assessment and temperature according to jurisdictional regulations. Plant-based patties are cooked to the manufacturer's stated internal temperature and held like any cooked protein, at 60 °C or higher. Record it where the HACCP plan requires.
Why not the others
A. Printed times assume a set grill temperature and patty state. A cooler grill, a thicker patty or a frozen centre changes the time, so the thermometer, not the clock, confirms doneness.
B. The touch test is a rough guide for whole-muscle steaks, not a safety check for a formed patty. Confirm with a probe thermometer.
C. Many plant-based patties are coloured with beet juice or similar pigments that change colour like beef, but colour is not a reliable doneness test for either product, and cutting one patty tells you nothing about the others.
02Answer key
| Question | Answer | Sub-task |
|---|---|---|
| Q1 | A | Cooks grains and pulses |
| Q2 | A | Processes alternative proteins |
| Q3 | B | Processes seeds and nuts |
| Q4 | C | Processes grains and pulses |
| Q5 | D | Cooks alternative proteins |
03What block H covers
This block covers grains, pulses, seeds, nuts and alternative proteins. It includes rice types, pilaf and risotto, quinoa, sorting and soaking dried beans, lentils and split peas, kidney bean safety, cooling cooked rice, nut and seed allergens, blanching and toasting nuts, rancidity, flax eggs, and tofu, tempeh, seitan, edible insects and plant-based burgers.
The Red Seal Occupational Standard names this block “Grains, pulses, seeds, nuts and alternative proteins”. It carries 7.3% of the exam, about 11 of the 150 questions, split across three tasks. The share column is each task's weight within the block, as the standard publishes it.
| Task and its sub-tasks | Share of block |
|---|---|
| Prepares grains and pulses Selects grains and pulses; Processes grains and pulses; Cooks grains and pulses | 39% |
| Prepares seeds and nuts Selects seeds and nuts; Processes seeds and nuts; Cooks seeds and nuts | 25% |
| Prepares alternative proteins Selects alternative proteins; Processes alternative proteins; Cooks alternative proteins | 36% |
04What the questions turn on
Pilaf versus risotto
Pilaf toasts the rice in fat, adds hot stock and cooks covered without stirring so the grains stay separate. Risotto uses a starchy rice such as arborio, with hot stock added a ladle at a time and stirred to release starch.
Sorting and softening pulses
Spread dried beans out to pick out stones and debris, then rinse before soaking. Lentils and split peas need no soak. Add tomatoes and most of the salt once beans are tender, because acid and salt keep them hard.
Kidney beans and cooked rice
Red kidney beans must be soaked, drained and boiled vigorously for at least 10 minutes, because slow cookers do not destroy their toxin. Cooked rice is a Bacillus cereus hazard, so cool it quickly in shallow pans.
Allergens in alternative proteins
Seitan is wheat gluten, so it is unsafe for celiac disease. Peanuts are legumes and are listed separately from tree nuts. Edible insects can cause reactions in people with a crustacean allergy, so guests need to be told.
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.