How to Test Candy Temperatures Without a Thermometer (2024)

You don't need a candy thermometer to make your favorite sweets. In fact, all you need is this handy guide and a bowl of cold water.

The so-called "cold-water method" is an easy way to estimate the temperature of your candy: Generations of cooks and candy makers have relied on this trick to make all types of candies, from fudge to toffee.

Lay out a spoon and a bowl of cold water beside your pot of boiling sugar. Every few minutes, drop a small spoonful of syrup into the cold water. Let the candy cool for a second, then form it into a ball with your hand. Compare the shape and texture of the candy to the chart below to determine the approximate temperature of the syrup. Once the candy reaches the desired stage (for example, the hard-ball stage for marshmallows), take the pot off the heat and proceed with the recipe.

Example: According to a fudge recipe, your boiling sugar must reach 236 F, the soft-ball stage. Once the sugar syrup has come to a boil, you drop a spoonful of syrup into the cold water—you repeat this process every three or four minutes. At first, the sugar syrup is stringy and shapeless, but after several tests, it starts to hold its shape. You form the sixth spoonful into a soft ball, which tells you that your syrup has reached 236 F. You take it off the heat.

This method requires practice and caution, but it's a great technique to have in your arsenal.

Check out theillustrated guide to candy temperature testing for some helpful pictures of syrup at each stage.

Candy Temperature Chart

NameTempDescriptionUsage
Thread223-235 FThe syrup drips from a spoon and forms thin threads in water.Glacé and candied fruits
Soft ball235-245 FThe syrup easily forms a ball while in the cold water but flattens once removed.Fudge and fondant
Firm ball245-250 FThe syrup is formed into a stable ball but loses its round shape once pressed.Caramel candies
Hard ball250-266 FThe syrup holds its ball shape when pressed but remains sticky.Divinity and marshmallows
Soft crack270-290 FThe syrup will form firm but pliable threads.Nougat and taffy.
Hard crack300-310 FThe syrup forms brittle threads and easily cracks and snaps.Brittles and lollipops
Caramel320-350 FThe sugar syrup will turn golden brown and have a fragrant caramel smell.Caramel syrup, Pralines

Note: Please exercise caution when working with candy, since molten sugar burns are particularly dangerous. Pay careful attention to your boiling syrup and don't let any jewelry or hair near the pot.

How to Test Candy Temperatures Without a Thermometer (2024)

FAQs

How to Test Candy Temperatures Without a Thermometer? ›

To test your candy temperature, you'll want a bowl of cool water to drip the sugar into. You'll know you've reached the soft ball stage when the sugar forms a small ball in the water. The ball will quickly flatten after a few moments of handling as it warms in your hand.

How to check candy temperature without a thermometer? ›

Drop a small amount of the candy mixture with a teaspoon into a small bowl of cold water. Each time you test the candy use a fresh bowl of cold water. If the candy forms a thin thread and does not "ball up", it is in the thread stage or 230°—235°F.

What can I use if I don't have a candy thermometer? ›

For the Cold Water Test: 1/2 to 1 teaspoon of the syrup (candy mixture) is dropped from a clean spoon into a small bowl of very cold water (not ice cold). Quickly examine and/or carefully pick up the sugar from the cold water. The firmness of the sugar indicates the highest temperature the syrup reached.

Can I use a regular thermometer if I don t have a candy thermometer? ›

While you may think you can get away with using a meat thermometer in place of a candy thermometer (or vice versa), this is definitely not the case. A candy thermometer's long, narrow shape allows you to safely check the temperature of hot sugar or hot oil without burning yourself.

What if I don't have a sugar thermometer? ›

To check your sugar syrup has reached the correct stage without using a sugar thermometer, place a bowl of very cold water next to the hob. Using a clean spoon, carefully take a little of the syrup and drop it into the bowl of cold water. Leave to cool for a moment then pick up the ball of syrup.

How to measure temperature without a thermometer? ›

There are several ways to determine temperature without a thermometer, but one common method is to use a temperature-sensitive material with a known melting or boiling point. For example, you can use ice, which melts at 0°C (32°F), or a substance like paraffin wax, which has a specific melting point.

What can you do if you don't have a thermometer? ›

Checking for a fever without a thermometer
  1. Touching the forehead. Touching a person's forehead with the back of the hand is a common method of telling whether or not they have a fever. ...
  2. Looking for flushing in the cheeks. ...
  3. Pinching the hand. ...
  4. Checking urine color. ...
  5. Looking for other symptoms.

What does sugar look like at 300 degrees? ›

Hard-crack stage (300 degrees Fahrenheit and above): A small amount of syrup added to cold water makes a loud cracking noise and separates into brittle threads. The hard-crack stage is for toffee and hard candies like lollipops. Above 330 degrees Fahrenheit, the sugar begins to caramelize and brown.

How do you manually check temperature? ›

Temperature measurement
  1. Mouth: Place the probe under the tongue and close the mouth. Breathe through the nose. ...
  2. Rectum: This method is for infants and small children. They cannot hold a thermometer safely in their mouth. ...
  3. Armpit: Place the thermometer in the armpit. Press the arm against the body.

What app can I use to check food temperature? ›

Hubl is the perfect solution for your food temperature logs. Not only does it allow you to record hot and cold temperatures, it also provides helpful guidance based on FSA best practice. Hubl lets you record hot temperatures for cooking, sous vide and hot holding.

How do you test temperature at home? ›

Turn on the digital thermometer. Place the thermometer under your armpit, making sure it touches skin, not clothing. Hold the thermometer tightly in place until you hear the thermometer beep indicating it's done. Remove the thermometer and read the number.

How to tell if sugar is 300 degrees? ›

Hard-crack stage (300 degrees Fahrenheit and above): A small amount of syrup added to cold water makes a loud cracking noise and separates into brittle threads. The hard-crack stage is for toffee and hard candies like lollipops. Above 330 degrees Fahrenheit, the sugar begins to caramelize and brown.

How to tell if fudge is ready without a thermometer? ›

Even without a candy thermometer, you can still check if the fudge is cooked by doing a cold water test. Drop a piece of hot fudge into a glass filled with ice water. It should form a soft ball that can easily flatten between your fingers.

How long does it take for hard candy to reach 300 degrees? ›

It usually takes about 10-12 minutes to get to this point while boiling the mixture and it's very helpful to have a candy thermometer on hand for tracking the heat of the mixture as we want to go past this point and bring our mix closer to that 300 degrees F point.

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