The phrase "a doorstep of" is correct and usable in written English.
It can be used metaphorically to describe a threshold or beginning point of something, often implying an opportunity or a new phase.
Example: "Standing at the doorstep of a new adventure, she felt a mix of excitement and fear."
Alternatives: "a threshold of" or "the brink of".
My tasty warm salad of olives, capers and mixed leaves lost something in the looks department too, being almost obscured by a doorstep of, admittedly good, cheese.
It's a doorstep of a book, making one quail at the thought of the rivers of ink that will be spilled when Obama has completed his presidency.
Yet one book, a surprisingly short one, paints Leonardo as a genius, whereas the other, a doorstep of a volume, presents him uncut, looking something of a fallen angel.
Start the day with Mexican eggs (perfectly cooked in a spiced tomato sauce with wilted spinach and a doorstep of buttered sourdough) or a huge breakfast burrito served with fresh tomato salsa and sour cream.
It is not a big, sprawling thing like Storylines, the epic Robert Frank retrospective that Tate Modern hosted in 2004 – though the accompanying catalogue, packed with informative essays, is a doorstep of a book.
Lighter Than My Shadow by Katie Green (Cape) is a thunking great doorstep of a book and has a serious theme, being a memoir of its author's struggle with, and recovery from, anorexia.
From the breakfast menu, a large, doorstep of rarebit (£3.50, two for £4.50) was exemplary.
The results of all this have been boiled down to The Endless City, a 500-page doorstep of a book I edited with Ricky Burdett and which is published this week.
The controversial format, involving families from Merseyside and Hull, will be broadcast on Channel 5 next Tuesday and opens with a man arriving on the doorstep of a house with a black briefcase stashed with cash.
"The last thing they would want, I'm convinced, is a war on their doorstep of a completely destabilized Korean Peninsula," he said.
A pair of brown leather boots was snatched last week from a doorstep in the suburbs of Chicago.
