### Clue: The best sentimentality is something for those crackers (5,6)
### Answer: CREAM CHEESE 
 ### Explanation: Definition: something for those crackers
 CREAM(the best;the elite) + CHEESE(back formation from cheesy;shoddy;kitschy;which some forms of over-sentimentality might be – a bit of a stretch for me).
Answer: Something to spread on those, ie. cream, crackers.