Related Clues:

• Displays vexation
• Cooks by slowly boiling
• Slow-cooked dishes
• Fusses and fumes
• Doesn't let it go
• Worries on guitar?
• Cooks casseroles
• Is in a huff
• Gets stressed
• Some slow-cooked meals
• Beef and Irish
• Dishes cooked by long simmering
• Loses sleep
• Mentally goes [grumble grumble grumble]
• Guitar features