Ingredients

• 1 cup pearl barley
  
• wedge brie - 4 to 5 ounces
  
• 1/3 cup plus 1 to 2 tablespoons mayonnaise
  
• 1 tablespoon extra virgin olive oil (a fruity one if you've got options)
  
• 1 tablespoon plus 1 teaspoon sherry vinegar
  
• 1/4 cup minced chives
  
• 1 to 1 1/2 teaspoons minced rosemary
  
• 1/2 teaspoon freshly ground black pepper
  
• 1/8 to 1/4 teaspoon fine sea salt
  
• bunch seedless red grapes (enough for 1 cup quartered)
  
• 1/2 cup chopped toasted walnuts