Possible Clues:

• The unit of currency in 11D
• Eastern money brings expression of disgust over time
• Currency used to buy gaeng kiao wan
• Currency whose symbol is a B with a vertical line through it
• Thai bread?
• Thailand coin
• Currency with King Mongkut on the fifty
• Coin featuring King Vajiralongkorn’s likeness
• Currency with Mongkut on the 50
• Initially behaves atrociously having Thai money