People across the US will be looking forward to digging into their Thanksgiving leftovers today - with many crafting their scraps into sandwiches.
But what makes the perfect Thanksgiving leftover sandwich?
Professor Charles Spence, Professor of Experimental Psychology at the University of Oxford, has revealed the secret formula.
Many of the ingredients will come as no surprise - including turkey, cranberry sauce, and sweet potatoes.
However, other additions are slightly more unusual.
According to Professor Spence, a zest of orange will help to take your sub to the next level.
Speaking to the Daily Mail, he advised: 'I would zest a little orange on top to enhance the aromatic notes in our sandwich.'
So, would you eat his perfectly formulated recipe?
As with any good sandwich, Professor Spence's recipe begins with bread - in this case, pumpkin seed slices.
While many people like to remove the crusts, the scientist advises against this.
'[Use] pumpkin seed slides of bread (crust on) so you keep seeded exterior, preferably a good orange colour,' he explained to the Daily Mail.
'Research suggests we like autumnal colours of the golden orange.'
Of course, the star of the show should be turkey.
And if possible, this should be leg meat rather than breast.
'The darker coloured leg meat has more flavour than breast,' Professor Spence explained.
For both acidity and colour, top the turkey with a 'healthy slathering' of cranberry sauce.
The perfect Thanksgiving leftover sandwich:
- Pumpkin seed slides of bread (crust on)
- Turkey (darker coloured leg meat preferable to breast)
- A slathering of cranberry sauce
- Orange zest
- Fresh ginger and nutmeg
- Sweet potato crisps
- Thin slices of celery
'Homemade is preferable as this will likely be more acidic, so better to cut through the fat,' the expert added.
Up until this point, all of these ingredients probably sound quite familiar to Thanksgiving leftover sandwich-making aficionados.
However, the next three ingredients - orange zest, fresh ginger, and nutmeg - might raise some eyebrows.
The orange zest serves to enhance the aromatic notes, while the fresh ginger and nutmeg 'add a note of winter warming spice', Professor Spence claims.
Next, we need a bit of crunch.
'Given that we all love crunchy, crispy, crackly foods, you should ensure some of the fillings appeal to the ear and help signal freshness,' he previously said.
While sweet potato might sound like an unlikely contender to bring the crunch, Professor Spence suggests crisps made from the vegetable could be perfect.
'We need something noisy. Sadly, sweet potato leftovers from last night are likely to be too soggy, so one might substitute sweet potato crisps,' he said.
'If necessary, you could try making them at home in your air fryer.'
Finally, Professor Spence recommends adding some greenery to your sandwich.
Instead of basic lettuce, the psychologist says that celery could be a great option.
'Lettuce is not necessarily available,but perhaps some thin slices of celery which became hugely popular in States,and was for a while a luxury food at end of 19th Century,' he added.