PICA PICA literally translated to itchy, itchy is the what you put inside the cascarones. You usually do it from scrap wrapping paper from past gifts. My favorite and most itchy paper to use is the metalic paper (not foil), not sure if you can get it in the US. For some reason this one brings out the most vivid memories of carnaval and it give the pica pica a sparkly look.
Some 'commercial' cascarones use the round scrap from the punch hole machines they buy from binding shops or offices. I don´t like this kind because this one does not itch!
Tonight we will do the home made glue to cover the cascarones. Get ready with you pica, pica.