Haggis is a traditional Scottish sausage made from a sheep’s stomach stuffed with diced sheep’s liver, lungs and heart, oatmeal, onion, suet and seasoning. Most haggis is part-cooked before being sold and needs to be simmered in boiling water for one to two hours. You can also buy vegetarian haggis based on beans. Haggis is traditionally served with ‘neeps ‘n’ tatties’ – mashed swede and potatoes – and whisky on Burns Night.