Possible Clues:

• Boston cream pie component
• Light dessert
• Airy dessert
• Light and fluffy dessert
• *Light, airy dessert
• Madeleine or ladyfinger, basically
• Soap needed by heavy drinker getting this at teatime?
• Good for washing someone down with lady's finger for afternoon tea
• Victoria sandwich, say
• Ladyfinger, e.g.