Related Clues:

• Type of pillow filler
• Pillow innards, sometimes
• Whitecap's top
• Shaving lather
• Frothy mass
• Beer bubbles
• Latte surface
• One of those on the beer or fizz
• Cappuccino’s top
• Latte art medium
• Topper for 27 Across
• Surf: effervesce
• Cappuccino's top
• Seat cushion filling
• What a mattress may be made of