Twang is also the name of a food manufacturer in San Antonio, TX that has been making various tangy-salty products since the 1980s. The company sells a variety of flavored salts, including lemon-lime, chili powder, and pickle, among others. Twang packages their salt into shakers and as single-serving packets that can be added to food, or mixed into drinks like beer, margaritas, and bloody mary cocktails. Although Twang is technically a seasoning, it's conceivable that some people could rip open a packet and just pour it right into their mouths.
Twang operates a web site at twang.com, where visitors can order any Twang product, as well as read the company's obligatory statement of sympathy about September 11th.