How to Make Hard Candy in High Humidity (and Soft Candy, Too!) (2024)

It may be hard to understand how to make hard candy in high humidity, and soft candy is just as challenging. Most recipes are already temperamental, so if the weather isn't ideal, perfecting a sugary candy recipe is even trickier. But you don't necessarily have to wait for the cold, dry days of winter to make a batch of your favorite candy.

With some knowledge about how humidity and the weather affect candy making, plus a few tips for combatting the effects, you can make your own candy in almost any climate. If you're preparing a candy in summer or live somewhere warm all year round, use this advice to help your next batch of candy turn out just the way you like it.

How to Make Hard Candy in High Humidity (and Soft Candy, Too!) (1)

How Does Weather Affect Candy Making?

Candy recipes usually call for precision, such as heating sugar to a specific temperature and cooling it quickly. When the weather is hot or humid, it may take longer for the candy to cool, or it can absorb excess moisture from the air, which might cause the sugar to crystallize or the texture to soften instead of becoming hard and crisp.

That's part of why candy making is so prevalent in winter; the best climate for making candy has a relative humidity of less than 35%, and cold air usually has less moisture than hot air. But if you live in an area that's hardly ever that dry (or if you're craving a batch of peanut brittle when the weather is warm), you can always use your air conditioner or a portable dehumidifier for about a day or so before making candy.

How to Make Hard Candy in High Humidity

If the weather conditions are less than ideal, you can still make a great candy recipe with a few tweaks. Because excessive softness in candy results from high relative humidity, cook hard candies, such as nut brittle, to 2 degrees higher than the temperature your recipe calls for. The additional 2 degrees in cooking temperature will compensate for moisture in the air, so your candy will still have the correct texture.

Accuracy is also essential for candy, especially if you're adjusting a recipe for the weather. Always be sure to use a candy thermometer for precise readings, and check the thermometer you're using (even if it's brand new) to make sure it's giving the correct reading.

To double-check, before you start making candy, clip the thermometer to a pot of water, ensuring the tip isn't touching the bottom of the pan. Then, heat the water to a rolling boil on the stove. Check the temperature on the thermometer once the water is boiling; it should match the boiling point of water in your region (at sea level, water boils at 212°F, but the boiling point decreases as the altitude increases).

If the thermometer gives the correct temperature for boiling water, you know it will provide accurate measurements as you're heating sugar and water. If the thermometer is wrong (say it's off by 5°F), you'll know to add or subtract that amount from the reading to get the right temperature.

How to Make Hard Candy in High Humidity (and Soft Candy, Too!) (2)

Triple-Chocolate Truffles

How to Temper Chocolate in Hot Weather

If you're tempering chocolate for a candy recipe (slowly melting and then cooling chocolate to give it a glossy finish), humidity also affects that process. Just like any other candy, you'll have the best results if you do it on a cool, dry day. However, if you're tempering chocolate on a warm or humid day, cooling the chocolate to the right temperature is the most likely spot for trouble.

Hot weather might make chocolate cool too slowly; however, you can help gently cool it by dipping the bottom of the bowl into room temperature water (don't let any water touch the chocolate itself). This will allow the chocolate to slowly cool to the correct temperature without letting it get too cold. Don't use cold water or place the bowl in the fridge; this could cool it down too quickly, causing the chocolate to crack or lose its shininess. Once properly tempered, the chocolate will look even more appetizing.

Storing Candy

Whether the weather is humid or not, how you store your candy will also affect the texture and how long it lasts. Keep different types of candy in separate, airtight containers in a cool, dry place like your pantry or the refrigerator. This is especially important if you live in a humid climate since the finished candy could absorb moisture from the air, which will cause it to go soft sooner.

How to Make Hard Candy in High Humidity (and Soft Candy, Too!) (2024)

FAQs

How to Make Hard Candy in High Humidity (and Soft Candy, Too!)? ›

Because excessive softness in candy results from high relative humidity, cook hard candies, such as nut brittle

brittle
Brittle is a type of confection consisting of flat broken pieces of hard sugar candy embedded with nuts such as pecans, almonds, or peanuts, and which are usually less than 1 cm thick.
https://en.wikipedia.org › wiki › Brittle_(food)
, to 2 degrees higher than the temperature your recipe calls for. The additional 2 degrees in cooking temperature will compensate for moisture in the air, so your candy will still have the correct texture.

How to make hard candy in high humidity? ›

Because excessive softness in candy is the result of high relative humidity, you can also cook hard candies, such as peanut brittle, to 2 degrees higher than the temperature your recipe calls for.

Does high humidity affect candy making? ›

Issues with Candy Making in High Humidity

You may also feel a stickiness on hardened sugar you are using for making candy. Cooking candy sugar to the proper temperature requires achieving the appropriate sugar-moisture balance. High humidity hastens the breakdown of sugar as it cools.

Why won't my homemade candy harden? ›

If the sugar mixture is not cooked to the proper temperature (the hard-crack stage 300-310° F {149-154° C.} or if you are working in a kitchen with high humidity, chances are your candy is retaining too much moisture.

Does humidity affect caramels? ›

Too much humidity – An overly humid environment can make caramel sticky and create a less than desirable layer of scum on its surface.

What makes hard candy harden? ›

The process of turning sugar into a hard, smooth, transparent confection involves heating a sugar/corn syrup/water solution to 300 – 310° F. {150 - 155° C.}, or what is known as the hard crack stage of sugar. The use of a candy thermometer is not essential, but highly recommended and accuracy is critical.

What is the best humidity for cotton candy? ›

Cotton candy remained stable for over 2 y when held at 11% RH, but crystallized within 3 d when held at 33% RH. ... It has been said that the key to making high-quality candy is understanding and controlling the transitions of sugar.

How to make fudge in high humidity? ›

Normally, you'd stir continuously and heat your pan until it reaches the temperature suggested in your Homemade Fudge Recipe. However, on a humid day you will need to ensure you boil your Fudge to 0.5 degrees higher than the normal temperature.

Why is high humidity not good? ›

High humidity can alter air quality

With so much water vapor in the air during times of high humidity, airborne pollution particles can't disperse into the atmosphere as easily as they normally would. Humidity holds these particles close to the ground, increasing and sustaining the levels of air pollution around us.

What does cream of tartar do to hard candy? ›

Preventing sugar crystallization.

Cream of tartar can prevent your homemade hard candy, caramel, and toffee from forming a gritty texture due to sugar crystallization.

How do you keep candy soft? ›

Jellied Candies

If the packaging has been opened, soft candies should be kept in a covered candy dish, away from heat and light at room temperature (about 70 degrees). Stored in this manner, the candy should last six to nine months. If the packaging has not been opened, soft sweets will last approximately 12 months.

What makes candy soft? ›

Chewy soft candy like toffee, fudge or chews are examples in which sucrose esters can improve softness. Sucrose ester molecules speed up crystallisation and form a layer around sugar crystals. This layer inhibits further crystal growth, enhancing a soft texture.

How to make candy in high humidity? ›

Because excessive softness in candy results from high relative humidity, cook hard candies, such as nut brittle, to 2 degrees higher than the temperature your recipe calls for. The additional 2 degrees in cooking temperature will compensate for moisture in the air, so your candy will still have the correct texture.

Does humidity affect hard candy? ›

On a humid day, once the candy has cooled to the point where it is no longer evaporating moisture into the air, it can actually start reabsorbing moisture from the air. This can make the resulting candy softer than it is supposed to be.

Why didn't my homemade caramels harden? ›

If caramels are too soft, that means the temperature didn't get high enough.

How do you dry things in high humidity? ›

Turn a fan on to increase the airflow.

Leave the door open to the room with your laundry so the moisture has somewhere to escape. Avoid opening the windows in your room since you could let in the outside humidity and make it more difficult to dry your clothes.

How do you make candy at high altitude? ›

Rule of Thumb: For each 1,000 feet above sea level, reduce the temperatures in the recipe by 2°F. This adjustment allows the candy maker to control the degree of evaporation necessary to achieve the proper sugar concentration for the desired end product.

Can you make peanut brittle when humidity is high? ›

3 Tips for Making Peanut Brittle

Brittle is best made on dry, low humidity day. If you make it when it is humid, the candy will attract moisture from the air, making it sticky instead of crisp. Humidity also slows the cooling process while your candy is setting, increasing the chances of having unwanted crystals form.

Can you make fudge in high humidity? ›

High humidity alters the cooking properties of sugar. Fudge can take three times as long to set up, if at all. Sugary meringue absorbs humidity. Left uncovered on a humid day, it can turn to mush.

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