Part 2 — Answer key

Compare your answers after you have finished Part 1.

1. You’re mixing a simple batter with milk, flour, sugar, and oil, and there’s nothing tangy or acidic in it. Which leavener can still reliably make it rise?
   Baking powder
2. Baking soda starts producing carbon dioxide as soon as it is moistened, even before the batter goes into the oven.
   True
3. You put muffins into an oven that is still climbing to temperature instead of fully preheated. What outcome is most likely?
   Poor initial rise and a denser crumb
4. Tasting a bite of raw cookie dough is safe as long as it contains no eggs.
   False
5. When you cream butter and sugar for a cake, what are you mainly trying to add to the batter?
   Tiny air bubbles
6. A cake keeps turning out dry and crumbly even when you bake it for the right time. Which measuring habit is a classic cause?
   Scooping flour from the bag and packing it
7. Flour dust can spread germs to countertops and utensils even if you never eat the raw dough.
   True
8. A brownie recipe calls for natural cocoa powder and baking soda. You only have Dutch-process cocoa. What adjustment best matches the chemistry?
   Replace baking soda with baking powder
9. Opening the oven door early while baking a sponge cake usually helps it rise higher because it releases steam.
   False
10. Your muffins have long tunnel holes and a tough bite. What change most directly fixes it next time?
    Mix just until combined
11. Double-acting baking powder produces gas when mixed and then produces more gas again in the oven.
    True
12. Your butter is shiny and starting to look oily before you cream it with sugar. What result is most likely in a cake?
    A denser cake
13. Convection baking often works best with a slightly lower temperature than a conventional oven because the moving air speeds browning.
    True
14. You want a tender, delicate crumb in a cake. Which flour choice helps most?
    Cake flour
15. You want your cookies chewier without changing the bake time. Which ingredient shift usually helps most?
    Use more brown sugar
16. Washing raw eggs before cracking them is recommended because it removes Salmonella from the shell.
    False
17. You mix a quick bread batter leavened with baking soda, then it sits on the counter for 30 minutes before baking. What is the most likely result?
    Less rise
18. Your butter-and-sugar mixture looks smooth, then it turns curdled when you add eggs. Which change prevents that most reliably?
    Use room-temperature eggs and add them gradually
19. If a yeast dough is not rising because your kitchen is cold, the best fix is usually to add extra yeast.
    False
20. You want a flaky pie crust, not a tough one. Which approach helps the most?
    Keep butter cold and leave visible pieces
21. You’re making a no-bake filling that uses raw eggs. Which choice reduces food safety risk the most?
    Pasteurized eggs
22. A baking stone or steel can improve bread oven spring because it stores heat and transfers it quickly to the dough.
    True
23. Your banana bread tastes slightly soapy and the crumb looks oddly yellow. What is a likely cause?
    Too much baking soda
24. Your baguette dough feels tight and tears when you try to stretch it, but you do not want to overmix. What step helps most?
    Rest flour and water before adding salt and yeast
25. Granulated sugar only sweetens baked goods, it has little effect on texture or browning.
    False
26. A recipe is written for a conventional oven, but you are using convection. What is the best first adjustment?
    Reduce temperature slightly and start checking earlier
27. Your pancakes come out flat and you suspect your baking powder is weak. Which quick kitchen test is most useful?
    Stir a spoonful into hot water and look for bubbling
28. For recipes like mousse or buttercream that use uncooked egg whites, pasteurized carton egg whites can reduce food safety risk.
    True
29. In a lean bread dough, which ingredient most directly tightens and strengthens the gluten network?
    Salt
30. Replacing all butter with oil in a cake always makes it lighter because oil is liquid.
    False
31. You add a pan of hot water to the oven when baking crusty rolls. What are you trying to achieve?
    A thinner crust and better early oven spring
32. Your pizza dough rises well but tastes bland. What change most improves flavor without changing ingredients much?
    Longer cold fermentation
33. You want to make edible cookie dough that is meant to be eaten raw. Which step makes it safer?
    Heat-treat the flour
34. You replace granulated sugar with honey 1:1 in a muffin recipe and change nothing else. What change is most likely?
    More browning and a moister crumb
35. You can substitute baking soda for baking powder using the same amount in most recipes.
    False
36. Your cheesecake looks perfect, but it cracks across the center as it cools. What change best targets the cause?
    Use gentler, more even heat and cool gradually
37. Your rustic loaf is baked through but dense and a bit gummy, and the dough felt very stiff during mixing. What change most directly addresses that?
    Increase hydration slightly and build strength with folds
38. Your croissants lose their layers and butter leaks out during baking. Which root cause is most likely?
    Butter and dough were too warm during lamination
39. A shaped loaf puffs up nicely during proofing, but it collapses and bakes up pale with a tight crumb. What is the most likely cause?
    Overproofed
40. The same cookie dough bakes much darker on one sheet pan than another. One of the pans is dark nonstick. What is the best explanation?
    Dark pans absorb more heat and brown faster
41. You accidentally add melted butter (not softened) to a lean bread dough. The loaf bakes up with a tighter crumb and less loft. What is the best explanation?
    Fat can coat flour and inhibit gluten development and gas retention
42. You switch a chocolate cake from natural cocoa to Dutch-process cocoa but keep the same amount of baking soda. Now the cake has a slightly soapy note. What adjustment best fixes the chemistry?
    Add an acid or switch to baking powder
43. You cook pastry cream until it thickens, then take it off the heat. A minute later it turns grainy, like tiny scrambled egg bits. What is the most likely cause?
    Carryover heat continued cooking and curdled the egg proteins