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Cornstarch vs. gelatin: Make your own chocolate pudding

10/2/2018

6 Comments

 
Author: Maddie Van Beek

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Corn Starch vs. Gelatin


Today we are going to learn about two different food thickeners, and compare their effects by making a delicious dessert! Why would we need anything to thicken our food? Can you think of any examples? Make a list.


One common food thickener is cornstarch. Many people use cornstarch to thicken gravies, soups, or sauces. The result is a creamier texture with an opaque appearance.


Another thickener is gelatin. Gelatin is more often used for custards, pie filling, or Jell-O® desserts. Unlike cornstarch products, gelatin allows foods to hold their shape more rigidly, and the appearance of these foods is typically more transparent.


While cornstarch and gelatin are different in some ways, both thickeners require heating to work their magic. Cornstarch thickens food as it is heated, but gelatin thickens food as it cools.


How exactly do these ingredients work?


Starch is a carbohydrate that can come from a variety of plants or grain products, such as potatoes, pasta, or rice. Starch is stored within the plant as an energy source, and is one of the most common carbohydrates in the human diet. If you try to mix starch with water or other cold ingredients, it will eventually settle to the bottom. As starch is heated, the molecules swell, and the tiny grains of starch absorb water. Once that water is trapped in the starch molecules, the food thickens. When the food is removed from heat, it will thicken even more as it cools.


Gelatin is a product that comes from collagen derived from animal skin or bone. In contrast to starch, gelatin is actually a protein. When mixed with cold ingredients, gelatin will not readily dissolve. Once heated, the protein strands lose their bonds with one another and the gelatin becomes a clear syrup. While warm, gelatin causes some thickening, but not much. Once cooled, the protein strands twist together, trapping liquid in between the amino acid bonds, creating a gel. The longer it cools, the firmer the gel becomes.


Now that you understand these two culinary ingredients, let’s move on to the fun part! Today you’re going to make two chocolate pudding desserts! Make sure you take notes along the way to compare your two recipes. Chart the differences in appearance, consistency, and at the end, taste!


YOU WILL NEED:
* 2 ¾ cups Milk
* 3 tablespoons Cocoa powder
* ½ cup Sugar
* 1 teaspoon Vanilla
* ¼ teaspoon salt
* ¼ cup Cornstarch
* 1 tablespoon Gelatin
* 2 Saucepans
* Measuring cups and spoons
* Mixing bowl
* Whisk and stirring spoon


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If you want to track the differences side by side, prepare both recipes at the same time using two different saucepans.

Before you start, look at the cornstarch and gelatin. Write down observations, feel it, notice differences in texture. You may even try mixing each with a bit of water. What happens?
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Here’s what to do!
1. Measure the dry ingredients, excluding the gelatin (sugar, salt, cocoa, cornstarch), into one saucepan and mix together. Set aside.
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2. Measure the gelatin powder into the mixing bowl. Add ¼ cup milk and whisk together. You should see a thick paste. Don’t worry if the gelatin doesn’t fully dissolve. Set aside.
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3. Measure the same amount of the dry ingredients, this time excluding the cornstarch (sugar, salt, cocoa) into a second saucepan. Add the remaining 2 ½ cups milk.
4. Measure 2 ¾ cups milk into the first saucepan of dry ingredients.
5. Place both saucepans on the stove over medium heat. Remember which one is which!
6. Stir both as they heat. You should notice the ingredients begin to dissolve as they heat.
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Above, right after placing over heat. Cornstarch on the left, milk mixture on the right. Below, after a few minutes of heating and stirring.
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7. After about five minutes, both saucepans should be relatively well mixed with no big clumps. Remove the gelatin pan from heat.
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8. Continue stirring the cornstarch pan until it boils, and keep stirring until the pudding seems well-thickened. It will be darker in color and noticeably thicker. This process should take about 2 minutes after boiling.
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Left, after pudding begins to thicken. Right, after two minutes of stirring after boiling.

9. Pour the heated milk mixture into the mixing bowl of gelatin and whisk until evenly distributed.
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10. Scoop one cup of cornstarch pudding into a glass or bowl, cover, and refrigerate. Do the same with the gelatin pudding.
11. Now we wait! You can eat the leftover warm cornstarch pudding while you wait for your gelatin pudding to set. This will take about 2 hours.
12. Once two hours is up, remove both puddings from the refrigerator. Compare the appearance. Scoop a spoonful of each and compare consistency. Try them both! What do you notice? Record your results!
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Above after two hours of refrigeration: Gelatin pudding on the left, cornstarch pudding on the right.

Results:
If you want a recipe that’s done fairly quickly, cornstarch pudding is the way to go. It’s thickened within 10 minutes or so, and can cool off in the fridge or even be eaten as a warm creamy treat (yum!).

Gelatin pudding does take a while to set, so you have to plan a few hours in advance. But the result is decidedly different! If you want a fancier dessert that holds its shape and can be layered (think different flavors, colors, or toppings) this is the way to go! Even the basic chocolate recipe we used settled into two different layers, which was really cool! The top layer was a little more jelly-like while the bottom was creamier. You can whip the pudding to have an even consistency, but leaving it in layers makes for an interesting dessert!


​Either way, have fun comparing and consuming your delicious puddings!

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6 Comments
Karen Cabrera
7/29/2020 06:50:55 am

Thanks for sharing! I am torn between using gelatin or cornstarch on my mousse.

Reply
Reloha
8/8/2020 11:29:12 am

I prefer hot/warm pudding to cold, personally. I was looking for something to use instead of the Cook and Serve mixes because of the gelatin in them. Thanks for the cornstarch recipe!

Reply
Gigi
1/18/2021 03:35:44 pm

This is so confusing, I only want to make one batch-the gelatin recipe. Can you please help those of us with cognitive issues who need it simple &are confused with the recipe telling us to make 2 at once when we only want to make 1 of them? Very frustrating! From ingredient list down! :/

Reply
LORIE
8/17/2021 03:32:41 pm

Fascinating. Thank you so very much for the simple to understand details and pictures. This has helped me a lot

Reply
Serene Chan
10/23/2021 11:23:20 pm

Thanks for your lovely notes.
You've hit it on the spot! This is what I'm looking for!
"Cornstarch thickens food as it is heated, but gelatin thickens food as it cools"

Reply
William Cappitte link
7/5/2022 08:06:28 am

I am going to try making a pie with corn starch. It makes me sick to think about gelatin. Thank you for you information I appreciate it. Have a Blessed day Bill

Reply

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