Three different colourants were used in the study: spray dried beetroot powder (0.7 g/L or 1.4 g/L), beetroot
extract (extracted from cut whole beets, 1:50 dilution), and a concentrated anthocyanin extract (from grapes, provided by Eckes- Granini Finland Oy Ab, Turku, Finland, 1:1250 or 1:2500 dilution).