If you're ever in Scotland don't miss this meal! The first time I was in Scotland, my mother-in-law made it for me and I found I really like it! I was warned before ever visiting Scotland (by a few Americans) that haggis was not very good and was made of strange things. I won't disagree that for many people it might be best not to know what is in haggis before trying it, but I quite like it myself and would recommend it! For those who do want to know, haggis contains sheep's "pluck" (heart, liver, and lungs), onion, oatmeal, suet, spices and salt mixed with stock and it's traditionally simmered in a sheep's stomach for 3 hours. Today, most commercial haggis is prepared in a casing rather than an actual stomach. Haggis is definitely a must try!