McDONALD'S introduced its new Arch Deluxe sandwich aimed at adults yesterday and predicted it could generate $1 billion (£635,000 million) in sales in its first year.

Here's a $5 billion adult market for lettuce, tomato and bacon hamburgers and we're going after it in a big way," chairman Mr Michael Quinlan said in a statement.

"Our test results clearly show that Arch Deluxe has the potential to be a billion dollar brand in its first year ... and that's just the beginning," said Ms Debbie Doyle, senior marketing manager for McDonald's San Francisco region in a statement.