Sumatra by Starbucks® Coffee. Sumatra has a full, syrupy body with virtually no acidity - so the coffee's intensity lingers in your mouth. There's a capricious spirit that makes Sumatra an adventurous coffee - regardless of its unpredictability, you should be prepared for unusually concentrated spicy and herbal notes. The earthy aroma is especially grounding. Don't forget to order your coffee filters!