Sias Koffee Roaster: Experience the Best in Fresh Roast and Ground Coffee Beans. Located in Ang Thong, Sias Koffee Roaster is a specialty coffee roaster with a passion for delivering quality coffee products to customers in Thailand and beyond. With a wide range of fresh roast coffee beans, including Thai and imported varieties, you’ll find the perfect coffee to suit your taste preferences. Whether you prefer rich and bold roasts, smooth and light blends, or rare and sought-after varieties like Ethiopian Geisha and barrel-aged coffee, Sias has it all. Shop online for the best in ground coffee and fresh roast coffee beans and taste the difference for yourself!