Lots of folks ask me if I've tried it. The answer is yes, I have. Once. Was it OK? It was OK and I ate everything on my plate. Did I love it? No.
From Wikipedia:
Haggis is a traditional Scottish dish.
There are many recipes, most of which have in common the following ingredients: sheep's 'pluck' (heart, liver and lungs), minced with onion, oatmeal, suet, spices, and salt, mixed with stock, and traditionally boiled in the animal's stomach for approximately three hours.
