Ice Bowl is a hollow bowl. Made of borosilicate. It is ideal for filling with water and freeze. forming a compact ice bowl perfect for serving any cold soup. ice cream. tartar. etc. Due to its size. it allows a slow melting with a slow liquid lost. To prevent any dilation rupture during freezing, pour some water, wait until it freezes, then pour some more, wait again, and finally pour the rest of the water until it is filled. This layer freezing system allows to decorate your bowl with coloured water. or products such as flowers. seaweed.