Sugar Candy with Citric Acid

Introduction

This candy cooks to 310°F so it sets hard and snaps cleanly, while the citric acid gives it a sharp sour finish instead of plain sweetness. You shape it into small drop-sized pieces, dust them with powdered sugar, and store them for a make-ahead sweet that keeps well in a dry container.

Recipe Details

• Prep Time: 10 minutes
• Cook Time: 40 minutes
• Total Time: 50 minutes
• Servings: 8

Ingredients

• 2 cups (480 mL) white granulated sugar
• 1 cup (240 mL) water
• ½ tsp (2.5 mL) cream of tartar
• 1 Tbsp (15 mL) citric acid
• Powdered sugar

Instructions

1. Bring the sugar, water and cream of tartar to boil over medium-low heat. Stir gently until syrup reaches 310°F (155°C/hard crack stage) or is pale brown. Syrup should harden completely when dropped on to a cold plate and snap between the teeth when cold.
2. Pour the mixture onto an oiled heatproof work surface, and sprinkle with the citric acid.
3. Use a greased spatula to fold in the sides and thoroughly work the acid in.
4. When the candy is cool enough to touch but still pliable, roll it into sticks and snip off drop-sized bits.
5. Sift powdered sugar onto the candies, and shake to coat.
6. Allow to cool and harden completely. Store in an air-tight container.

Variations

• Reduce the citric acid to 2 teaspoons if you want a milder sour finish; the candy stays hard but tastes less sharp.
• Increase the citric acid to 1 1/2 tablespoons for a more aggressive sour hit; the texture stays the same, but the flavor lands faster.
• Replace the powdered sugar coating with a light dusting of cornstarch if you want less surface sweetness and a drier finish.
• Change the shaping step by cutting larger pillow-shaped pieces instead of small drops; the candies look more rustic and take a little longer to harden fully.
• Add a few drops of gel food coloring while folding the hot candy on the work surface if you want colored pieces without thinning the mixture.

Tips for Success

• Have the oiled work surface, greased spatula, and powdered sugar ready before the syrup reaches temperature, because hard candy moves quickly once poured.
• Use a candy thermometer if you have one; if the syrup does not reach 310°F, the finished candy can stay sticky instead of snapping cleanly.
• Start rolling and snipping when the candy is just cool enough to touch but still bends easily; if you wait too long, it will crack instead of shaping cleanly.
• Let the pieces harden completely before coating with powdered sugar or storing, or they can clump together.

Storage and Reheating

FAQ

Do you need a candy thermometer for this recipe?

No, but it is the most reliable way to hit hard crack stage. The cold plate test works if the drop hardens fully and snaps once cold.

Why did the candy turn sticky instead of hard?

The syrup usually did not reach 310°F, or the finished candy picked up moisture after cooling. Cook to hard crack and store it in an air-tight container at room temperature.

Can you use less citric acid?

Yes. Reduce it to 2 teaspoons if you want a less sour candy; the texture stays hard as long as the syrup reaches the correct temperature.

Why coat the pieces with powdered sugar?

The powdered sugar helps keep the candies from sticking together and makes them easier to handle. It works best after the candy has cooled and hardened completely.