positive/negative space

This is a design ad from a food and wine festival I remember seeing before. It is  very eye-catching because of the simple image and sharp contrast. They use the positive space to create a national symbol for food (the fork) and they use the negative space in the prongs of the fork to create wine bottles. both fit in well and are very noticeable and recognizable.   It also has some asymmetrical balance by having the main design in the bottom left corner and the large text in the upper right corner, which evens everything out.