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Easy Homemade Rock Candy - A Fun, Colorful Treat You Can Make at Home

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Prep Time 15 minutes
Cook Time 10 minutes
Total Time 25 minutes
Servings: 8 servings
Ingredients Method

Ingredients
  

  • Granulated sugar (about 4 cups for 2–3 sticks of candy)
  • Water (about 2 cups)
  • Food coloring (gel or liquid)
  • Flavor extracts (optional: vanilla, lemon, peppermint, strawberry, etc.)
  • Wooden skewers or clean cotton strings
  • Glass jars (1 per candy stick)
  • Clothespins or clips (to hold skewers in place)
  • Small plates or parchment paper (for drying sugar-coated skewers)

Method
 

  1. Prepare your skewers: Dip wooden skewers in water, then roll them in granulated sugar to coat the lower half. Set them on a plate to dry completely. This “seed coat” helps crystals form faster and more evenly.
  2. Clean your jars: Wash and dry your jars so there’s no residue. Choose jars tall enough to keep skewers suspended without touching the bottom.
  3. Make the sugar syrup: Add 2 cups of water to a medium saucepan. Bring it to a gentle simmer over medium heat. Slowly add 4 cups of sugar, about 1/2 cup at a time, stirring until it dissolves fully before adding more.
  4. Reach supersaturation: Once all sugar is added, keep heating and stirring until the liquid turns clear and slightly thick. You should see a glossy, syrupy consistency with no undissolved grains. If grains persist, add a spoonful more sugar and stir to dissolve. Do not boil vigorously.
  5. Add color and flavor: Remove the pan from the heat. Stir in 1–2 drops of food coloring and 1/4 to 1/2 teaspoon of your chosen extract. A little flavor goes a long way.
  6. Cool the syrup slightly: Let the syrup sit for 10–15 minutes. Hot syrup can melt the seed sugar on your skewers, so you want it warm but not scalding.
  7. Fill the jars: Carefully pour the warm syrup into the jars, leaving about 1 inch of headspace. If you want multiple colors, divide the syrup and tint each jar separately.
  8. Insert skewers: Place a sugar-coated skewer into each jar. Use a clothespin across the jar opening to hold the skewer centered and suspended. The tip should hover about 1/2 inch from the bottom and not touch the sides.
  9. Let crystals grow: Set the jars in a cool, undisturbed area at room temperature. Cover the tops loosely with paper towels or coffee filters to keep dust out while allowing moisture to escape.
  10. Check daily: Within 24–48 hours, you should see crystals forming on the skewer. Let them grow for 5–7 days until they reach your desired size. The longer you wait, the larger the crystals.
  11. Remove and dry: When ready, lift the skewers out and let them drip briefly over the jar. Place them on a parchment-lined plate to dry for 1–2 hours, until no longer sticky.
  12. Clean up and store: If you plan to make more candy, you can gently reheat leftover syrup to dissolve any crystals and reuse it. Otherwise, soak jars in hot water for easy cleanup.