Guarana Guarana is an exotic plant, predominantly grown in the Amazon, that contains high levels of caffeine. Mandarin We have used a sweet Mandarin flavouring to bring a deliciously juicy orange twist to this blend. Green Tea Our crisp green teas start their journey from the dewy, misty tea gardens of China. The teas are gently pan fired. Superblends Seize your day with both hands and add a little Boost for the perfect pick me-up. What does it taste like? Discover the juicy sweetness this blend brings. A harmony of fresh green tea and guarana, with sweet mandarin and apple flavours. We've also added Vitamin B6 which contributes to normal energy-yielding metabolism, perfect for a mid-morning lift.