Pubs have been warned about selling boozy desserts as new research shows they could take people over the drink-drive limit.

The study by firm All Car Leasing revealed that two portions of Italian dessert tiramisu could put you over the limit.

Tiramisu traditionally contains two tablespoons of brandy (anywhere from 40 to 60 per cent ABV), coffee liqueur (often around 20 per cent ABV), and Amaretto (around 28 to 30 per cent ABV).

Other desserts that the firm said should be treated with caution included cherry brandy trifle, which can contain up to 100ml of cherry brandy, and Christmas pudding with its toxic cocktail of brandy, sherry, whisky, and rum, that can especially be an issue if microwaved rather than steamed or boiled.

It also highlighted boozy chocolate snacks filled with alcohol – although it did say you would probably need to eat several hundred to get near the limit.

Even some sauces are risky, including Jack Daniel's bourbon and Jalapeno varieties. Four servings of peppercorn sauce, which normally contains about 100ml of brandy, could add a significant amount of alcohol to your blood.

Wine orientated dishes such as Chicken marsala can contain as much as 250ml of the Sicilian wine, and should be eaten cautiously if driving and having a pint.

Incredibly, even some fruit juices are on the risk list. Orange juice has 0.5 per cent ABV of alcohol from orange ferments, for example.

The main point though is that when boozy foods are consumed with a pint or glass of wine it could tip you over the limit and result in a conviction, especially in Scotland where it has recently been lowered to 22mg per 100ml from 35mg. This means almost any amount of additional alcohol puts you at risk of prosecution.

Ronnie Lawson-Jones of All Car Leasing said: "We wanted to highlight the potential unknown risks around driving whilst under the influence due to certain foods and drinks.

"You're unlikely to get through a bottle of hot sauce during one sitting, but two pints of orange juice? It's plausible.

"As a rule of thumb, two pints of regular-strength lager or two small glasses of wine would put you over the limit.

"Whilst a light-hearted study, we felt people may want to know that some foods could add to their alcohol intake more than first thought."