The 500-ml CT drink was a commercially available concentrated cordial product (Lemon Barley Squash; Sainsbury’s), which was prepared with 240ml of concentrate and 260ml of mineral water (Buxton Spring still mineral water; Nestlé) containing zero flavonoids, 962kJ (230kcal), 48-g sugars, 0·7-g protein, 0-g fat, 0·3-g fibre and 130-mg vitamin C. Our dose of 70·5-mg flavonoids could be considered low relative to previous studies(6);