Possible Clues:

• 'Extra ___' (something my digestive system really regretted me saying to the waiter at the Thai place)
• Intense, as chili
• Like Taco Bell's Diablo sauce
• Like some wings on "Hot Ones"
• Tangy
• Like jalapenos wrapped in raw ginger
• Piquant, hot-tasting
• Mole I caught burrowing in, having capers?
• Limitations on soup — cold or hot?
• Like hot wings