Ghostly Macaroons

In a large bowl, whisk together all ingredients except coconut. Add coconut; mix well. Drop by rounded teaspoonfuls onto parchment paper-lined baking sheets. Bake at 325 degrees for about 25 minutes, or until set and golden; rotate baking sheets between upper and lower oven racks halfway through baking time. Cool on baking sheets for one minute; transfer to wire racks and cool completely. Store in an airtight container.