Here is the actual quote:
The sight of these poor revellers appeared to interest the Spirit very much, for he stood with Scrooge beside him in a baker's doorway, and taking off the covers as their bearers passed, sprinkled incense on their dinners from his torch. And it was a very uncommon kind of torch, for once or twice when there were angry words between some dinner-carriers who had jostled each other, he shed a few drops of water on them from it, and their good humour was restored directly. For they said, it was a shame to quarrel upon Christmas Day. And so it was. God love it, so it was.
In time the bells ceased, and the bakers were shut up; and yet there was a genial shadowing forth of all these dinners and the progress of their cooking, in the thawed blotch of wet above each baker's oven; where the pavement smoked as if its stones were cooking too.
"Is there a peculiar flavour in what you sprinkle from your torch?" asked Scrooge.
"There is. My own."
"Would it apply to any kind of dinner on this day?" asked Scrooge.
"To any kindly given. To a poor one most."
"Why to a poor one most?" asked Scrooge.
"Because it needs it most."