The public sector food body will take over responsibilities previously done in the country by the Food Standards Agency (FSA).
Richard Lloyd, Which? executive director, said it was important the agency builds on work of its predecessor and operates transparently as a strong, independent consumer champion.
“It’s vital that the new food agency tackles the challenges facing Scotland, including obesity rates, food poisoning and food fraud, putting the interests of Scottish consumers at its heart.”
Which? said it wanted FSS to prioritise food fraud and misleading practices, reduce food poisoning rates and improve food law enforcement.
Geoff Ogle, chief executive of FSS, said it will provide a regime responsive to Scotland's needs.
“Our focus will be on making decisions based on the food safety, labelling and nutrition issues that affect the Scottish public most directly.”
Maureen Watt, Minister for Public Health, said it was a ‘great day’ for the Scottish consumer and the food and drink sector.
“We now have a new food body that is uniquely placed to focus on our own particular needs and priorities. Food Standards Scotland will be a trusted source of food safety advice and nutritional guidance.”