Lost AF is lighter than most of the BrewDog AF range: a pale, slightly cloudy pour with minimal head and a restrained aroma. Grapefruit and passionfruit are there if you lean in, but this is not a beer that announces itself loudly. On the palate, citrus and herbal hops come through alongside passionfruit and lychee, with biscuit malt providing background sweetness. Bitterness builds gently across the sip. Contains lactose, so not vegan. It works well served cold, and it fits a gap the rest of the range does not quite cover: something lighter, simpler, and less hop-forward for when you want a cold beer without much fuss.