Related Clues:

• Burger order
• More than scarce
• Like barely broiled meat
• Like praseodymium
• Like a Liberty gold coin
• Underdone
• Steakhouse pink
• Red inside
• Out-of-print
• One in a million, say
• Striking
• Noteworthy
• Pink, maybe
• Well-done's opposite
• Of particular interest to a completist