The gravy may be further coloured and flavoured with gravy salt -LRB- a simple mix of salt and caramel food colouring -RRB- or gravy browning -LRB- gravy salt dissolved in water -RRB- or ready-made cubes and powders can be used as a substitute for natural meat or vegetable extracts .

Ready-made cubes and powders can be used as a substitute for natural meat or vegetable extracts .
