McDonald's all-day breakfast: Fast food giant to trial sale of McMuffins and McGriddles throughout the day

It looks like you may soon be able to McDonald's breakfast options all-day long. A new report by Janney Capital Markets reveals that the fast-food chain plans to test all-day breakfast in the US in upcoming months.

A research note released by the firm stated: "Our industry sources inform us that McDonald's US plans to test all-day breakfast — breakfast items for sale throughout the 24-hour day — in one domestic market, with the test set to begin within the next month or two."

According to Business Insider, Janney Capital Markets analyst Mark Kalinowski said the test run "makes sense", adding that among the chain's most "craveable" menu items are the McMuffins and McGriddles. However, Business Insider notes that the switch to all-day breakfast could cause operational problems.

The fast-food giant stated that it does not serve breakfast all day due to kitchen grill sizes. "It comes down to the sheer size of kitchen grills. They simply don't have the room for all of our menu options at one time — especially considering we use our grill to prepare many times on our breakfast menu," the company posted on its website.

The restaurant chain normally ends its breakfast options at 10:30am during the week and 11:30am at the weekend. However, it has tried to expand breakfast hours by offering it before 5:30am and featuring many breakfast menu items in the Midnight menu.

McDonald's has yet to comment or confirm the all-day breakfast test run.