Juicy Concentrates – Infused Pre-Roll Joints – 1g – Pineapples in Paradise A strain specific cannabis extract pre-roll joint by Juicy Concentrates. Juicy Concentrates is a licensed manufacturer of infused products in Colorado. They specialize in curating the cleanest, best tasting, juiciest concentrates, but that's not all! They developed their own hardware to ensure your first hit is as good as your last and there are no worries about toxins like heavy metals.