According to Food and Wine Magazine Mayonnaise Slices are coming to Japan. The company Bourbon is going to release they wrapped condiment slices. Bourbon is known for their Chocolate products and not actually Bourbon Liquor. They plan on releasing a few different flavors next month. These flavors include a “tuna mayonnaise sheet” and a mix of mayonnaise and mentaiko (spicy cod roe). The mayo slices which come in packages of four will retail for 200 yen, or about $1.80. I'm not a fan of Mayo so I'm not sure if that is a good price but there is no way I'll try any of these slices...... wrapped condiment slices. Bourbon is known for their Chocolate products and not actually Bourbon Liquor. They plan on releasing a few different flavors next month. These flavors include a “tuna mayonnaise sheet” and a mix of mayonnaise and mentaiko (spicy cod roe). The mayo slices which come in packages of four will retail for 200 yen, or about $1.80. I'm not a fan of Mayo so I'm not sure if that is a good price but there is no way I'll try any of these slices.