So I'm in SF this week on some business, and today I had lunch down on the Embarcadero, and I got one of these "eco-friendly" cups. I've never heard of them before so I thought I'd pass a link over to the
eco-friendly manufacturing company. Good for them.
From there web-site:
Greenware® portion cups and lids are a line of crystal clear, American made premium portion cups manufactured from NatureWorks® biopolymer, a polylactic acid (PLA) resin derived entirely from plants instead of oil. Greenware portion cups feature a rolled rim for leak-resistant lid application are are crystal clear to highlight any food or beverage. Available in three popular sizes, Greenware portion cups are a sustainable solution in foodservice packaging.