Mindfuel Flow is doing something genuinely different here. Most functional drink brands lean on caffeine; this one specifically avoids it. Instead it uses Lion's Mane mushroom extract — associated with cognitive support and calm focus — in a British oat milk base. The salted caramel flavour is there to make the whole thing drinkable rather than earthy, and by all accounts it succeeds: the mushroom doesn't come through at all. The base is 50% gluten-free oat drink, sweetened with chicory root fibre syrup rather than sugar. At 63 calories per 250ml can it's genuinely low-cal for a latte-style drink. The B6 and B12 vitamins are the ones most relevant to energy metabolism, so there's actual thought behind the formulation rather than a token superfood addition. Positioned as a daytime drink — something you'd have instead of a flat white. At £2.50 a can it's not cheap, but the functional ingredient load justifies the premium better than most in this category.