You may have laid on posh wine and gourmet food, but when it comes to hosting a dinner party, things can go very wrong is people’s manners aren’t up to scratch. 

Now research has revealed a definitive consensus on what one should and shouldn’t do at an evening soiree.

Etiquette expert, Jo Bryant, said: ‘A dinner party is the perfect time to relax and enjoy good company, but both guests and hosts must play their part in being considerate and well-mannered.

‘Guests should be sociable, helpful and respectful. You may vape and check your phone at the table in your own home, but these kinds of behaviours are on the taboo list for social gatherings elsewhere.

‘It is also important for guests to ‘read the room’ when it comes to conversation topics. 

‘While some people are comfortable talking about sex at the table, it may not be the best choice of chat for a mixed-generation dinner or with those you don’t know so well’. 

Research conducted by one of Australia’s largest wine exporters revealed a definitive consensus on what one should and shouldn’t do at an evening soiree.

However, the research by Andrew Peace Wines found that in the right circumstances you might get away with kinky conversation, with 13 per cent of people saying sex is now acceptable dinner table conversation.

However, more than 50 per cent of those polled said that looking at your phone during dinner is a no-no, while even more (64 per cent) disapproved of vaping at the table.

And it seems that the age-old adage that you shouldn’t speak about politics and money at the dinner table persists, with more than a third of people saying it’s a no-no. 

Other major dinner party red flags include taking your socks off at the table,  overstaying your welcome, and boasting about your salary.

You should also refrain from posting a picture of the host’s food to Instagram without asking them for permission.

It comes after a professional butler revealed you should never open a bottle of wine brought by a dinner guest on the same night.

Daniel Prattley, from Devon, who was previously an assistant to Joan Rivers, works for wealthy families across the world specialising in luxury villa hospitality.

Dan the Butler, as he’s known, advised that if someone brings a bottle of wine as a gift to a party, it is poor etiquette to open it on the same evening.

This is because it implies that you don’t have enough booze to keep your guests’ glasses filled.

Speaking to Insider he said: ‘Never open wine that’s bought for you. Make sure you don’t just have enough wine, but non-alcoholic spirits for those who are driving, pregnant, or don’t want to drink.’