How do you paint Springerle cookies? Paint cookies after drying overnight but BEFORE baking. Use paste food colors available in cake decorating shops. Mix 1 egg yolk with 1/4 teaspoon of cold water and Mix well with a fork. Divide this into as many small containers or "puddles" as you wish to have colors. To these containers (or "puddles" on aluminum foil) add some paste food colors and mix with toothpicks. (see easy monochromatic look below)
Keep in mind that the yolk is yellow and will change the hue of the paste colors. The colors also change slightly as the cookies bake. Use narrow artist's paintbrushes that are new or are only used for working with food.
Rub 'n Buff® is another option for deocrating your springerle. Rub 'n Buff® is a wax-based, metallic finish and is not recommended for children. This method works best with a sponge brush (Spouncer™) or a piece of foam (you may use your fingertip). With very little Rub 'n Buff®, you can create a unique patina finish depending on the color of the base coat. For faux finishes, we recommend a dark gray base coat for silver, green for copper and brass, and dark brown for bronze. 1. Apply base coat, and let dry. 2. Dab a small amount of Rub 'n Buff® from the tube onto your brush. Replace the cap immediately (Rub 'n Buff® dries very quickly). Dab nto the raised edgs of the design and let dry.3. Buff with a soft cloth. Note: Rub 'n Buff® also comes in a variety of colors