Possible Clues:

• Sauce from copper with famous daughter
• Something chewed includes famous sauce
• Eggy dessert
• Sweet topping sat awkwardly in cheese starter?
• Partially digested food including brilliant sauce
• Bit of dessert? Leading lady has something to chew over
• Thickened milk containing mixed ingredients for taste?
• Way one is using some milk outside to produce sauce
• Eclair filling
• Comic character taking us in with tart, artlessly filled with this?