Ingredients

• raspberry jam (with seeds is great!)
  
• 2 slices bread
  
• thinly sliced ham
  
• grated Gruyère cheese (it's best to buy a hunk of cheese and grate it yourself for increased melt-ability)
  
• grainy brown mustard
  
• 1 egg
  
• 2 tablespoons milk
  
• 1 pat butter