Possible Clues:

• Mustardy condiment
• Condiment for sushi
• Pea coat, at times
• Pungent green paste used in Japanese cuisine
• It's almost always actually horseradish in the U.S
• Was that sailor with one that's really hot?
• Flavouring used in Japanese cuisine
• Sushi bar supply
• Condiment often mixed with soy sauce
• Sushi go-with