Hundreds of people are expected to attend the state memorial service, which commences at 4:00 pm.
Fulton, remembered as the woman who taught Australia how to cook, died on July 24, 2019.
She was 94.
Bagpipes will be played during the special service in honour of Fulton’s Scottish heritage.
Fulton introduced the nation to a world of cooking beyond the traditional meat and three veg, encouraging Australians to cook with organic and diverse ingredients.
She was the food editor for Woman’s Day and wrote more than 20 cookbooks.
She was best known for her 1968 classic, The Margaret Fulton Cookbook, but was also widely revered for her 1973 Italian Cookbook.
According to The Canberra Times, the recipes included in this book were “simple, tested... and where necessary adapted to suit the local scene”.
Fulton was able “to add authenticity to the book by taking a trip to Italy and checking the fare at first hand”.
She was quoted as recommending that cooks “look for the speciality ingredients in a good delicatessen or gourmet section of large retail stores”.
“Use only the best quality Italian olive oil and when using grating cheese like Parmesan or Romano, buy it in wedges and grate it as you need it,” Fulton added.
Born in Nairn, in the Scottish Highlands, on October 6, 1924, Fulton immigrated to Australia when she was three years old.
She began as a cooking teacher at the Overseas Corporation in 1947, and commenced her career in teaching Aussies how to cook with a talk on “cooking with ready-to-eat cereals” in 1954.
Her first foray into publishing was as a cookery writer for Woman magazine before she became food editor of Woman’s Day.
Fulton was awarded the Medal of the Order of Australia in 1983 in recognition of service to the media as a journalist and writer in the field of cookery.
In 1998, she was named an Australian Living Treasure by the National Trust of Australia.
As a mark of mourning and respect, the Australian National Flag will be flown at half-mast all day today in New South Wales only from all buildings and establishments occupied by Australian Government departments and affiliated agencies.