This potent health drink was brought to us by American entrepreneur Dave Asprey in 2011 after he said he found mental clarity from drinking yak-butter tea while trekking in the Himalayas. The coffee, coconut oil and grass-fed butter or ghee blend is intended as a breakfast meal replacement. Dubbed "bulletproof coffee", the fat and nutrients from the drink supposedly minimise hunger pangs. However, the trend never really caught on as it’s incredibly high in fat.

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