Brits love avocados (I mean, who doesn’t adore guac?) but the fruit can quickly discolour once you’ve cut it open due to oxidisation. Luckily, experts have shared a cheap and effective hack to keep your smashed avo looking vibrantly greenBrits love avocados (I mean, who doesn’t adore guac?) but the fruit can quickly discolour once you’ve cut it open due to oxidisation. Luckily, experts have shared a cheap and effective hack to keep your smashed avo looking vibrantly green