Maarten De Ceulaer's Balloon Bowls, made from synthetic plaster and pigmented with food dye. To make these, Maarten pours colored plaster into one balloon, puts another one in and blows it up; the bowl cures in the space in between. Next, he chips away the fragile edges, coats it with two layers of polyester and two layers of food safe coating, and it's ready to go, as documented in Victor Hunt's video above. As Maarten explained last night, the wide range of color is due to the unexpected way the pigments mix, sometimes stratifying and sometimes marbling.
