KEY POINTS:
Take a sheep's heart, liver, and lungs, mince with onion, oatmeal, spices and salt, and boil in the animal's stomach for three hours. It is haggis, and the English can't get enough of Scotland's national dish.
Marks & Spencer has seen sales increase 35 per cent and other chains report rises of more than 10 per cent.
At about 1.50 ($4) a serving, haggis is cheap and its high fat content makes it filling in these budget-conscious times.
