Famous Crispy Potato Casserole Recipe - Build Your Bite (2024)

FAQs

What makes potatoes crispy science? ›

Crispiness is almost entirely due to the starch in potatoes, says Joseph Provost, a chemistry and biochemistry professor at the University of San Diego who co-wrote “The Science of Cooking: Understanding the Biology and Chemistry Behind Food and Cooking.” The two main molecules of that starch, a type of carbohydrate, ...

A really good sweet potato casserole filling should be light and moist, not dense. If it's dense, then you may not have added an often overlooked ingredient—an egg. An egg adds lift, structure and volume and makes the filling more custard-like.

Interestingly, cornstarch contains 25 to 28 percent amylose, which is higher than the amount in wheat or potato starch (which are 20 to 22 percent amylose), and this is why cornstarch works the best for making crispy coatings on fried foods.

Starch rich potatoes usually turn soft and crumbly, while frying or baking. So, if you are making delicacies wherein you want the potatoes to be crispy and crunchy, then removing starch is the best way to keep your wafers, fries, crispy potatoes, hash browns crisp and delicious.

Fresh herbs or citrus zest can also punch up flavors with a bit of welcome brightness for a long-cooked dish, as can adding some heat in the form of a dash of hot sauce, a generous pinch of minced or sliced fresh chili pepper, or a shake of red pepper flakes.

Eggs and cream help stabilize the dish and prevent it from becoming too runny (a common complaint with many sweet potato casserole recipes). Make it as smooth or chunky as you like!

Spoiler: They're not the same vegetable.

That's because sweet potatoes and yams are in fact very different vegetables that we've come to refer to interchangeably for a number of reasons over the years. While a dish may arrive at your table calling itself "candied yams," it may well have been made with sweet potatoes.

If roasted potatoes lack their crunchy sheen, overcrowding is usually the culprit. Just as overcrowding bacon or mushrooms in a saucepan causes disappointingly mushy results, placing potatoes too close to each other on a baking sheet will prevent them from crisping while they roast.

If you over-crowded the pan so that there isn't enough space for the potatoes to rest on the pan without touching each other, it will prevent the water from evaporating and making the potatoes crispy.

Do I have to boil potatoes before roasting? Not necessary but this can help get the perfect consistency and crispiness. Make sure you boil them but leave them a bit al dente and they will crisp up perfectly in the oven.

What is the potato experiment in science? ›

Water will move from an area of less salt to more salt (more water to less water), and so when the potato is placed in the saltwater, all the water that is inside the potato (yes, plants have a lot of water inside of them, that's what gives a plant it's structure) moves out by osmosis.

The hot oil ensures moisture can evaporate quickly from the outside of the fry. This is what makes your fries crisp up. Drying the outside also helps to accelerate the Maillard reaction. The Maillard reaction is a complex series of reactions between proteins and sugars and is what causes the potato to turn brown.

When cooked at high temperatures, sugars react with amino acids, including asparagine, in a chemical process known as the Maillard reaction. The reaction is what gives fried potatoes their prized flavor and color, but it is also what produces acrylamide.

If the salt concentration in the cup is higher than inside the potato cells, water moves out of the potato into the cup. This leads to shrinkage of the potato cells, which explains why the potato strips get smaller in length and diameter.