Wrapped up against the biting cold, the Duchess of Cambridge arrived wearing a green woollen hat, fleece, green parka-style jacket, dark blue jeans and wellies with a Scout's red, white and blue neckerchief, tied in a friendship knot.
As snowflakes were blown around the fells above Lake Windermere at the Great Tower activity centre near Newby Bridge, the temperature was estimated to have plummeted to minus five with the wind chill factor.
Kate, five months pregnant, spent about an hour outside with adult scout volunteers and youngsters.
The Duchess of Cambridge joined 24 other adults on a training day to learn scouting skills to pass on to children at their own groups.
As part of the day Kate learnt how to make "twisters" or "dampers".
She kneaded dough in a bowl for several minutes before making elongated twists. After washing the dough mix off her hands Kate wrapped a twist of the messy mixture around a twig stripped of bark which was placed over the open fire ready to toast.
The volunteers' efforts had mixed results, with the Duchess laughing and giggling with the others as some of the twisters dropped into the flames.
"I'm not sure if these are going to look particularly edible," Kate laughed.
After several minutes toasting on the fire Kate pulled off a piece of the bread and, rather gingerly, popped it in her mouth. "Oh, its actually not bad," she told the group. "It is quite sugary though."
National Secular Society welcomes Scouts atheist consultation
The president of the National Secular Society, Terry Sanderson, said the Scouts' consultation on an alternative oath for atheists was a "move in the right direction".
He also said it would put an end to "unpleasant confrontations" such as that of 11-year-old George Pratt, from Midsomer Norton in Somerset, who was excluded because he did not want to make the Scout Promise in its present form.
By adjusting their promise to include people without a religious belief, the Scouts will bring themselves in line with the reality of 21st-century Britain, where more than two-thirds of young people say they have no religious belief.
If the Scouts decide to change the promise, it would relieve many young people of having to lie about what they believe in order to be part of this great organisation.
– Terry Sanderson, president of the National Secular Society
Membership of the Scouts has risen during the past seven years from 444,936 in 2005 to 525,364 this year, figures released by the association show.
Since 2002, the number of girls taking part has increased by 69% while more than 50 scout groups catering for young people drawn mainly from Muslim, Hindu and Sikh communities have opened in the last ten years.