From 1975 onward, Mr. Tran made sauces from peppers grown by his older brother on a farm just beyond Long Binh, a village north of what was then Saigon. The most popular was an oil-based sauce, perfumed by galangal, a pungent relative of ginger. (Mr. Tran intended it as a dip for beef plucked from bowls of pho, it was more popular as a sauce for roasted dog.)
Hot Stuff in a Squeeze Bottle - NYTimes.com, 5/19/09