How to Make Royal Icing Icicles


Royal icing made to the consistency of toothpaste is thick enough to hold its shape and cling to cake surfaces -- but thin enough to drip into icicle shapes. You'll see these shapes on the eaves of many gingerbread houses, but they work well for any snow- or winter-themed cake. While royal icing decorations are often formed and dried on parchment paper, the icicles look most natural when piped directly onto the cake. Royal icing is made with egg whites and powdered sugar, but substitute meringue powder for the eggs when you plan to eat the icicles.

Things You'll Need

  • Decorating bag
  • Round decorating tip, optional
  • Warm, damp towel
  • Insert a small to medium round decorating tip into a decorating bag. Or you can make the icicles without a decorating tip by simply snipping the tip off the decorating bag to make a hole. Fill the bag with royal icing. Twist the top of the bag and tie it closed.

  • Hold the bag at a 90-degree angle with the surface you want to decorate with icicles. If applying icicles along the eaves of a gingerbread house, for example, hold the bag horizontally, parallel to the table or counter.

  • Hold the tip directly against the surface where you want to make an icicle. Squeeze the bag with medium pressure to squeeze out a dot of icing.

  • Drag the tip down away from the starting point while decreasing pressure until you stop squeezing the bag, creating a drip of icing that resembles an icicle. The icing drip might break off before you actually stop squeezing the bag.

  • Wipe the decorating tip clean with a warm, damp towel to prevent clumping when you start the next icicle. Repeat this after making each icing icicle.

  • Reposition the decorating tip directly beside the first icicle. Squeeze out a dot and pull the tip away to create a second icicle. Repeat this process until you make the desired number of icicles. Expect the icing to break off at different lengths, giving the icicles a more natural appearance.

  • Allow the icing to dry overnight, or until completely dry and hard.

Tips & Warnings

  • The first few icicles might not look quite like icicles, but the appearance becomes more apparent as you create more of them. As you make the icicles, think about the way real icicles form on your roof. Instead of being uniformly sized, many of them cling together in a group with some much longer than others.

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