Vietnamese Horseradish

When you're fondling a Vietnamese man and, while still fondling, you reach your other arm around him and into his anus and stimulate his prostate to make him ejaculate. The ejaculation will go into a jar, which will be the "horseradish" to be used on a sandwich/burger, typically.

"I just gave this asian guy the Vietnamese Horseradish and it was pretty tasty."