Possible Clues:

• Pudding - a travel firm gives you one for nothing
• Cereal, used in pudding
• Turn up the gas-ring to cook it
• How starchy of the South to get the green light
• Pudding originally steamed in the past
• As it comes back, go and have it in your palm
• Starchy food as white pudding
• From the South, a green light from the palm
• Dry starch from a type of palm
• Boastfully talk up old pudding